TUBE GLASS, PRIMARY PACKAGING CONTAINER FOR PHARMACEUTICAL PREPARATIONS, AND ALKALI SILICATE GLASS

Abstract

A tube glass of the present invention includes an alkali silicate glass, in which a glass composition is substantially free of B.sub.2O.sub.3 and Al.sub.2O.sub.3, and a loss in mass ? (mg/dm.sup.2) in an alkali resistance test in accordance with ISO 695 (199105-15) is classified as Class A1.

Claims

1: A tube glass comprising an alkali silicate glass, wherein a glass composition is substantially free of B.sub.2O.sub.3 and Al.sub.2O.sub.3, and a loss in mass ? (mg/dm.sup.2) in an alkali resistance test in accordance with ISO 695 (199105-15) is classified as Class A1.

2: The tube glass according to claim 1, wherein a total cation mass QC (mg/dm.sup.2) of eluted components per unit surface area in an elution test on an acidic solution is 1.6 or less.

3: The tube glass according to claim 1, wherein a hydrochloric acid consumption H (mL/g) to neutralize an eluate prepared by elution of an alkali component, determined in accordance with ISO 720 (1985), is classified as Class HGA1 or HGA2 in ISO 720 (1985).

4: The tube glass according to claim 1, wherein the glass composition contains, in mol %, 50 to 88% of SiO.sub.2, 0.1 to 20% of Li.sub.2O+Na.sub.2O+K.sub.2O, 0 to 20% of TiO.sub.2, and 0.005 to 12% of ZrO.sub.2; and is substantially free of B.sub.2O.sub.3 and Al.sub.2O.sub.3.

5: The tube glass according to claim 1, wherein a content of Na.sub.2O in the glass composition is from 0 to 20 mol %.

6: The tube glass according to claim 1, wherein a content of K.sub.2O in the glass composition is from 0 to 20 mol %.

7: The tube glass according to claim 1, wherein a content of MgO+CaO+SrO+BaO in the glass composition is from 0.1 to 10 mol %.

8: The tube glass according to claim 1, wherein an average transmittance at an optical path length of 1 mm and a wavelength of 400 to 800 nm is 60% or greater.

9: The tube glass according to claim 1, wherein a chemical resistance factor value, represented by {(a hydrochloric acid consumption H (mL/g) in a hydrolytic resistance test in accordance with ISO 720)?10+(a total cation mass QC of eluted components per unit surface area in an elution test on an acidic solution)?10+(the loss in mass ? in the alkali resistance test in accordance with ISO 695)}, is 98.5 or less.

10: The tube glass according to claim 1, wherein the tube glass is for use in a primary packaging material for pharmaceutical preparations, a laboratory instrument, and a corrosion-resistant piping for chemical plants.

11: A primary packaging container for pharmaceutical preparations which is formed by processing the tube glass according to claim 1.

12: (canceled)

13: An alkali silicate glass comprising a glass composition which contains, in mol %, 60 to 88% of SiO.sub.2, 0.1 to 20% of K.sub.2O, 0 to 6.5% of CaO, 0.1 to 20% of TiO.sub.2, and 0.005 to 12% of ZrO.sub.2; has a molar ratio TiO.sub.2/(Li.sub.2O+Na.sub.2O+K.sub.2O+MgO+CaO+SrO+BaO) of 0.3 to 3.5 and a molar ratio K.sub.2O/ZrO.sub.2 of 0.9 or greater; and is substantially free of B.sub.2O.sub.3 and Al.sub.2O.sub.3.

14: The alkali silicate glass according to claim 13, wherein the loss in mass ? (mg/dm.sup.2) in the alkali resistance test in accordance with ISO 695 (199105-15) is classified as Class A1.

15: The alkali silicate glass according to claim 13, wherein the total cation mass QC (mg/dm.sup.2) of eluted components per unit surface area in the elution test on the acidic solution is 1.6 or less.

16: The alkali silicate glass according to claim 13, wherein the hydrochloric acid consumption H (mL/g) to neutralize an eluate prepared by elution of an alkali component, determined in accordance with ISO 720 (1985), is classified as Class HGA1 or HGA2 in ISO 720 (1985).

17: (canceled)

18: An alkali silicate glass comprising a glass composition which is substantially free of B.sub.2O.sub.3 and Al.sub.2O.sub.3; contains, in mol %, 66% or greater and less than 84% of SiO.sub.2, 10% or less of MgO+CaO+SrO+BaO, and 8.5% or less of ZrO.sub.2; and has a molar ratio (Li.sub.2O+Na.sub.2O+K.sub.2O+MgO+CaO+SrO+BaO)/SiO.sub.2 of 0.4 or less.

19-22: (canceled)

23: An alkali silicate glass comprising a glass composition which contains, in mol %, 66% or greater and less than 84% of SiO.sub.2, 1% or less of B.sub.2O.sub.3, 1% or less of Al.sub.2O.sub.3, 10% or less of MgO+CaO+SrO+BaO, and 8.5% or less of ZrO.sub.2; and has a molar ratio (Li.sub.2O+Na.sub.2O+K.sub.2O+MgO+CaO+SrO+BaO)/SiO.sub.2 of 0.4 or less.

24-26: (canceled)

Description

BRIEF DESCRIPTION OF DRAWINGS

[0038] The FIGURE is a graph in which a horizontal axis represents mol % of SiO.sub.2 in various types of glass, and a vertical axis represents a total cation mass QC (mg/dm.sup.2) of eluted components per unit area.

DESCRIPTION OF EMBODIMENTS

[0039] Preferred embodiments of the present invention will be described below. However, the following embodiments are merely illustrative, and the present invention is not limited to the following embodiments.

[0040] The tube glass according to an embodiment of the present invention is an alkali silicate glass, and preferably has a glass composition which contains, in mol %, 50 to 88% of SiO.sub.2, 0.1 to 20% of Li.sub.2O+Na.sub.2O+K.sub.2O, 0 to 20% of TiO.sub.2, 0.005 to 12% of ZrO.sub.2. Preferably, the glass composition is substantially free of B.sub.2O.sub.3 and Al.sub.2O.sub.3. Hereinafter, the reason why the composition range of each component is defined as described above will be described. In the description of the content of each component, indication in % refers to mol % unless otherwise indicated.

[0041] SiO.sub.2 is a component that forms a glass network, and is a component that increases chemical resistance, particularly acid resistance. The content of SiO.sub.2 is preferably 50% or greater, 55% or greater, 60% or greater, 65% or greater, 66% or greater, 70% or greater, 72% or greater, particularly 74% or greater, and is preferably 88% or less, 85% or less, less than 84%, 83% or less, 81% or less, 79% or less, particularly 77% or less. When the content of SiO.sub.2 is too small, the structure of the glass becomes brittle, and chemical resistance tends to decrease. Meanwhile, when the content of SiO.sub.2 is too large, meltability tends to decrease. Further, the viscosity of the molten glass increases, and thus processing of the glass into the tube glass becomes difficult.

[0042] The content of Li.sub.2O+Na.sub.2O+K.sub.2O is preferably 0.1% or greater, 0.5% or greater, 1% or greater, 3% or greater, 5% or greater, 6% or greater, 7% or greater, particularly 8% or greater, and is preferably 20% or less, 19.5% or less, 19% or less, 16% or less, 14% or less, 12% or less, 11% or less, 10.5% or less, particularly 10% or less. When the content of Li.sub.2O+Na.sub.2O+K.sub.2O is too small, the viscosity of the glass increases, and the productivity and processability of the tube glass may be reduced. Meanwhile, when the content of Li.sub.2O+Na.sub.2O+K.sub.2O is too large, the amount of alkaline elution from the glass increases, and the pH change of the aqueous-based medicament is likely to be induced.

[0043] Li.sub.2O is a component that lowers the viscosity of the glass and enhances meltability and formability. The content of Li.sub.2O is preferably 0% or greater, 0.1% or greater, particularly 2% or greater, and is preferably 10% or less, 8% or less, 6% or less, less than 4%, 3.5% or less, 3% or less, particularly 2.5% or less. When the content of Li.sub.2O is too large, the amount of alkaline elution from the glass increases, and the pH change of the aqueous-based medicament is likely to be induced.

[0044] Na.sub.2O is a component that lowers the viscosity of the glass and enhances meltability and formability. The content of Na.sub.2O is preferably 0% or greater, 0.1% or greater, 3% or greater, particularly 4% or greater, and is preferably 20% or less, 18% or less, 16% or less, particularly 13% or less. When the content of Na.sub.2O is too large, the amount of alkaline elution from the glass increases, and the pH change of the aqueous-based medicament is likely to be induced. Also, devitrified crystals including SiO.sub.2Na.sub.2OZrO.sub.2 may precipitate, leading to a reduction in the productivity of the tube glass.

[0045] Similarly to Li.sub.2O and Na.sub.2O, K.sub.2O is a component that lowers the viscosity of the glass and enhances meltability and formability. The content of K.sub.2O is preferably 0% or greater, 0.1% or greater, 3% or greater, 5% or greater, 7% or greater, particularly 8% or greater, and is preferably 20% or less, 18% or less, 15% or less, 12% or less, 11.5% or less, particularly 11% or less. When the content of K.sub.2O is too large, the amount of alkaline elution from the glass increases, and the pH change of the aqueous-based medicament is likely to be induced.

[0046] TiO.sub.2 is a component that lowers the viscosity of the glass and enhances chemical resistance, particularly alkali resistance. The content of TiO.sub.2 is preferably 0% or greater, 0.1% or greater, 1% or greater, 2% or greater, 2.5% or greater, 3% or greater, 4.4% or greater, 5% or greater, 6% or greater, particularly 7% or greater, and is preferably 20% or less, 18% or less, 16% or less, 15% or less, 14% or less, 12% or less, 11% or less, 10% or less, 9.5% or less, 9% or less, particularly 8.5% or less. When the content of TiO.sub.2 is too low, the viscosity of the glass increases, and the productivity and processability of the tube glass may be reduced. Meanwhile, when the content of TiO.sub.2 is too large, the coloring of the tube glass may become pronounced, and further the glass is devitrified, which may lead to a reduction in the productivity and processability of the tube glass.

[0047] ZrO.sub.2 is a component that enhances chemical resistance, particularly alkali resistance. It is also one of the components that can be eluted, as impurities from the refractory used in the melting facility, into the glass component. Exceptionally, when the glass composition is substantially free of ZrO.sub.2, the risk to health can be reduced. Note that the phrase the glass composition is substantially free of ZrO.sub.2 means that the content of ZrO.sub.2 in the glass composition is 0.005 mol % or less. The content of ZrO.sub.2 is preferably 0% or greater, 0.001% or greater, 0.005% or greater, 0.01%, 0.05% or greater, 0.1% or greater, 1% or greater, 2.0% or greater, 2.5% or greater, 3% or greater, 3.5% or greater, 4.4% or greater, particularly 5% or greater, 6% or greater, and is preferably 13% or less, 10% or less, 9% or less, 8.5 or less, 7% or less, 6% or less, particularly 5% or less. When the content of ZrO.sub.2 is too small, sufficient chemical resistance cannot be exhibited, and the amount of components eluted from the glass increases, and this may cause change in quality of the aqueous-based medicament. Meanwhile, when the content of ZrO.sub.2 is too large, the glass is devitrified, which may lead to a reduction in the productivity and processability of the tube glass.

[0048] B.sub.2O.sub.3 is a component that lowers the viscosity of the glass and enhances meltability and formability. However, B.sub.2O.sub.3 is a component that evaporates together with the alkali component in the glass due to burner heating during container processing, and may contaminate the inner surface of the container. Accordingly, the content of B.sub.2O.sub.3 should be regulated to a level at which B.sub.2O.sub.3 is not substantially contained (0.5% or less), and is preferably 0.4% or less, particularly 0.3% or less.

[0049] When it is desired to lower the viscosity of glass, B.sub.2O.sub.3 may be intentionally added in a range of 1% or less.

[0050] Al.sub.2O.sub.3 is a component that enhances chemical resistance, and is also a component that suppresses devitrification. However, when the content of Al.sub.2O.sub.3 is too large, the Al.sub.2O.sub.3 is eluted, as aluminum ions, into the aqueous-based medicament, and introduced into the body by injection or the like. The aluminum ions introduced into the body may increase the risk of developing Alzheimer's disease. A phosphate buffer solution is stored in a glass container containing Al.sub.2O.sub.3, as a result of which aluminum ions eluted from the glass may react with the phosphate buffer solution to generate insoluble foreign matters. Accordingly, the content of Al.sub.2O.sub.3 should be regulated to a level at which Al.sub.2O.sub.3 is not substantially contained (i.e., 0.5% or less), and is preferably 0.4% or less, particularly 0.3% or less.

[0051] The refractory used in the melting facility may also contain Al.sub.2O.sub.3. In this case, Al.sub.2O.sub.3 from the refractory may be mixed into the glass and cause Al.sub.2O.sub.3 to be unintentionally mixed into the glass. In such a case, Al.sub.2O.sub.3 may be contained in a range of 1% or less. In addition, when it is exceptionally desired to improve hydrolytic resistance, Al.sub.2O.sub.3 may be contained in a range of 1% or less.

[0052] In addition to the above components, for example, the following components may be introduced.

[0053] The content of MgO+CaO+SrO+BaO is preferably 12% or less, 10% or less, 8.5% or less, 8% or less, 7% or less, 6% or less, 5% or less, 4.5% or less, 4% or less, 3.8% or less, 2% or less, 1.5% or less, particularly 1.3% or less. When the content of MgO+CaO+SrO+BaO is too small, the viscosity of the glass increases, and the productivity and processability of the tube glass may be reduced. Meanwhile, when the content of MgO+CaO+SrO+BaO is too large, the amount of alkaline elution from the glass increases, and the pH change of the aqueous-based medicament is likely to be induced.

[0054] MgO is a component that lowers the viscosity of the glass and enhances meltability and formability. The content of MgO is preferably 5% or less, 4.8% or less, 4% or less, 3.5% or less, 3% or less, 2% or less, 1.5% or less, particularly 1% or less, and is preferably 0% or greater, 0.05% or greater, 0.1% or greater, particularly 0.3% or greater. When the content of MgO is too small, the viscosity of the glass increases, and the productivity and processability of the tube glass may be reduced. When the content of MgO is too large, the amount of alkaline elution from the glass increases, and the pH change of the aqueous-based medicament is likely to be induced.

[0055] CaO is a component that lowers the viscosity of the glass and enhances meltability and formability. The content of CaO is preferably 7% or less, 6.5% or less, 5% or less, 4.5% or less, 3.8% or less, 3.5% or less, 3% or less, 2% or less, 1.8% or less, 1.5% or less, particularly 1% or less, and is preferably 0% or greater, 0.1%, 0.5% or greater, 0.7% or greater, particularly 1% or greater. When the content of CaO is too small, the viscosity of the glass increases, and the productivity and processability of the tube glass may be reduced. When the content of CaO is too large, the amount of alkaline elution from the glass increases, and the pH change of the aqueous-based medicament is likely to be induced.

[0056] SrO is a component that lowers the viscosity of the glass and enhances meltability and formability. The content of SrO is preferably 5% or less, 4.7% or less, 4% or less, 3.3% or less, 3% or less, 2% or less, 1.6% or less, particularly 1% or less. When the content of SrO is too large, the amount of alkaline elution from the glass increases, and the pH change of the aqueous-based medicament is likely to be induced.

[0057] BaO is a component that lowers the viscosity of the glass and enhances meltability and formability. The content of BaO is preferably 5% or less, 4.7% or less, 4% or less, 3.3% or less, 3% or less, 2% or less, 1.6% or less, particularly 1% or less, and is preferably 0% or greater, 0.05% or greater, 0.1% or greater, particularly 0.3% or greater. When the content of BaO is too small, the viscosity of the glass increases, and the productivity and processability of the tube glass may be reduced. When the content of BaO is too large, the amount of alkaline elution from the glass increases, and the pH change of the aqueous-based medicament is likely to be induced. In the case of an aqueous-based medicament containing a sulfate, the sulfate precipitates as barium sulfate, resulting in the formation of insoluble foreign matters.

[0058] ZnO is a component that reduces the viscosity of glass to improve meltability and moldability, but when the added amount of the component is too large, the devitrification resistance and the chemical durability may deteriorate. The content of ZnO is preferably 10% or less, 8% or less, 6% or less, less than 4.9%, 4.5% or less, 4% or less, 3% or less, 2.5% or less, particularly 2% or less, and is 0% or greater, 0.5% or greater, 1% or greater, particularly 1.5% or greater.

[0059] Fe.sub.2O.sub.3 is a component that is present as impurities, and is a component that enhances the coloring of the glass. The content of Fe.sub.2O.sub.3 is preferably 0.1% or less, more preferably 0.09% or less, particularly preferably 0.08% or less, and is preferably 0% or greater, more preferably 0.001% or greater, particularly preferably 0.003% or greater. When the content of Fe.sub.2O.sub.3 is too large, the coloring of the glass becomes too strong. The smaller the content of Fe.sub.2O.sub.3 is, the more the coloring can be suppressed, so this is preferred. However, for example, in order to reduce the content to a range of less than 0.003%, it is necessary to use an expensive high-purity raw material, leading to an increase in the batch cost.

[0060] SnO.sub.2 is a component that acts as a fining agent. The content of SnO.sub.2 is preferably 3% or less, 2% or less, more preferably 1% or less, particularly preferably 0.5% or less, and is preferably 0% or greater, 0.001% or greater, still more preferably 0.005% or greater, particularly preferably 0.01% or greater. When the content of SnO.sub.2 is too small, the amount of bubble residue in the tube glass increases, which may contribute to poor appearance. Meanwhile, when the content of SnO.sub.2 is too large, the glass is colored, which may contribute to poor transmittance.

[0061] SO.sub.3, Cl.sub.2, F.sub.2, Sb.sub.2O.sub.3 or the like can be used as a fining agent, in addition to SnO.sub.2. One kind of these components may be used alone, or multiple kinds thereof may be mixed and used. The content of each of the components is preferably 3% or less, 2% or less, 1.5% or less, 1% or less, 0.8% or less, 0.5% or less, 0.3% or less, particularly 0.1% or less, and is preferably 0.001% or greater, particularly 0.003% or greater. When the content of each of the components is too large, it may pose the increased risk of the corrosion in the facility and environmental contamination. When the content of each of the components is too small, the amount of bubble residue in the tube glass increases, which may contribute to poor appearance.

[0062] The molar ratio TiO.sub.2/(Li.sub.2O+Na.sub.2O+K.sub.2O+MgO+CaO+SrO+BaO) is preferably 0.3 or greater, 0.5 or greater, 0.7 or greater, 0.9 or greater, 1 or greater, particularly 1.1 or greater, and is preferably 5.5 or less, 3.5 or less, 3 or less, 2.5 or less, 2 or less, 1.5 or less, particularly 1.3 or less. This configuration achieves the effect of hydrolytic resistance improvement more efficiently.

[0063] The molar ratio K.sub.2O/ZrO.sub.2 is preferably 0.1 or greater, 0.3 or greater, 0.5 or greater, 0.7 or greater, 0.8 or greater, 0.85 or greater, or 0.9 or greater and 100 or less. This configuration achieves the effect of alkali resistance improvement more efficiently.

[0064] The molar ratio (Li.sub.2O+Na.sub.2O+K.sub.2O+MgO+CaO+SrO+BaO)/SiO.sub.2 is preferably 0.4 or less, 0.35 or less, 0.30 or less, 0.28 or less, 0.26 or less, 0.25 or less, particularly 0.23 or less, and is preferably 0 or greater, more than 0, 0.05 or greater, 0.1 or greater, 0.1 or greater, particularly 0.15 or greater. When the molar ratio (Li.sub.2O+Na.sub.2O+K.sub.2O+MgO+CaO+SrO+BaO)/SiO.sub.2 is large, the viscosity of the glass decreases, thereby making glass processing easier. However, the amount of alkaline elution increases and the pH of the aqueous-based medicament may be changed. Whereas, when the molar ratio (Li.sub.2O+Na.sub.2O+K.sub.2O+MgO+CaO+SrO+BaO)/SiO.sub.2 is small, the amount of alkaline elution decreases, but the viscosity of the glass increases, causing a decrease in processability.

[0065] Each of HfO.sub.2, SO.sub.3, Y.sub.2O.sub.3 and P.sub.2O.sub.5 as impurities may be contained up to 0.5%, and it is preferable that the content of each of the components is particularly from 0.001 to 0.1%.

[0066] In addition, Cr.sub.2O.sub.3, PbO, La.sub.2O.sub.3, Bi.sub.2O.sub.3, MoO.sub.3, WO.sub.3, Nb.sub.2O.sub.3, and PbO.sub.2 each may be added as impurities in an amount of 3% or less, 2% or less, 1% or less, less than 1%, particularly 0.5% or less.

[0067] As impurities, components such as H.sub.2, CO.sub.2, CO, H.sub.2O, He, Ne, Ar, and N.sub.2 each may be present up to 0.1%. Further, it is preferable that the mixed amount of noble metal elements (such as Pt, Rh, Au, and Ir) is 500 ppm or less, particularly 300 ppm or less.

[0068] The tube glass according to an embodiment of the present invention preferably has the following characteristics.

[0069] In the tube glass according to an embodiment of the present invention, the chemical resistance factor value, represented by {(the hydrochloric acid consumption H (mL/g) in the hydrolytic resistance test in accordance with ISO 720)?10+(the total cation mass QC of eluted components in an elution test on an acidic solution)?10+(the loss in mass ? in an alkali resistance test in accordance with ISO 695)}, i.e., the sum of 10 times the consumption H, 10 times the mass QC, and the amount ?, is preferably 98.5 or less, 90 or less, 80 or less, 70 or less, 60 or less, 50 or less, 45 or less, particularly 40 or less. When the chemical resistance factor value is too large, the glass tends to have poor chemical resistance.

[0070] The loss in mass ? (mg/dm.sup.2) in an alkali resistance test in accordance with ISO 695 (199105-15) is preferably 140 or less, 100 or less, 75 or less, 60 or less, 45 or less, 35 or less, 30 or less, particularly 27 or less. When the loss in mass ? is too large, the alkali resistance decreases. When the loss in mass ? (mg/dm.sup.2) is 75 or less, this is classified as Class A1.

[0071] When the elution test is performed on an acidic solution, the total cation mass QC (mg/dm.sup.2) of eluted components is preferably 3 or less, 2.5 or less, 2 or less, 1.7 or less, 1.5 or less, particularly 1.3 or less.

[0072] The hydrochloric acid consumption H (mL/g) to neutralize an eluate prepared by elution of an alkali component, determined in accordance with ISO 720 (1985), is preferably 0.5 or less, 0.4 or less, 0.3 or less, 0.2 or less, particularly 0.1 or less. When the hydrochloric acid consumption H is too large, the hydrolytic resistance deteriorates. A hydrochloric acid consumption H of 0.1 or less corresponds to Class HGA1, and a hydrochloric acid consumption H of 0.85 or less corresponds to Class HGA2.

[0073] The liquidus temperature is preferably 1300? C. or lower, 1250? C. or lower, 1200? C. or lower, 1150? C. or lower, particularly 1100? C. or lower. When the liquidus temperature increases, the glass is likely to be devitrified during processing of the glass into the tube glass.

[0074] The thermal expansion coefficient is an important parameter indicating thermal shock resistance. The thermal expansion coefficient in a temperature range of 30 to 380? C. is preferably 85?10.sup.?7/? C. or less, particularly 45 to 80?10.sup.?7/? C. When the thermal expansion coefficient is too high, the thermal shock resistance is likely to decrease.

[0075] The temperature at 10.sup.2.5 dPa.Math.s is preferably 1650? C. or lower, 1600? C. or lower, 1590? C. or lower, 1580? C. or lower, particularly 1570? C. or lower. When the temperature at 10.sup.2.5 dPa.Math.s is too high, the glass is unlikely to be melted.

[0076] The temperature at 10.sup.4.0 dPa.Math.s is preferably 1350? C. or lower, 1300? C. or lower, 1290? C. or lower, 1280? C. or lower, 1270? C. or lower, particularly 1265? C. or lower. When the temperature at 10.sup.4.0 dPa.Math.s is too high, the glass not readily processed into the tube glass.

[0077] The average transmittance at an optical path length of 1 mm and a wavelength of 400 to 800 nm is preferably 60% or greater, 70% or greater, 75% or greater, particularly 85% or greater. When the average transmittance at an optical path length of 1 mm and a wavelength of 400 to 800 nm is too low, it is difficult to visually recognize the change in quality of the medicament.

[0078] Next, a method for manufacturing the glass tube according to an embodiment of the present invention will be described. The following description is an example using a Danner process.

[0079] First, glass raw materials are compounded in accordance with a desired glass composition and a glass batch is prepared. Next, the glass batch is continuously fed into a melting kiln at 1550 to 1700? C., melted, and fined to form molten glass. Then, the molten glass is wound around a rotating refractory while blowing the air from an end of the refractory, and the glass is drawn out from the end. The drawn tubular glass is cut into a predetermined length to form a glass tube. The glass tube thus formed is used to manufacture vials or ampules.

[0080] The primary packaging container for pharmaceutical preparations according to an embodiment of the present invention is a primary packaging container for pharmaceutical preparations which is formed by processing tube glass, and the tube glass is the tube glass described above.

[0081] As another aspect, the alkali silicate glass according to an embodiment of the present invention includes a glass composition which is substantially free of B.sub.2O.sub.3 and Al.sub.2O.sub.3, in which a chemical resistance factor value, represented by {(the hydrochloric acid consumption H (mL/g) in the hydrolytic resistance test in accordance with ISO 720)?10+(the total cation mass QC of eluted components per unit surface area in an elution test on an acidic solution)?10+(the loss in mass ? in an alkali resistance test in accordance with ISO 695)}, is 98.5 or less. As another aspect, the alkali silicate glass according to an embodiment of the present invention includes a glass composition which: contains, in mol %, 60 to 88% of SiO.sub.2, 0.1 to 20% of K.sub.2O, 0 to 6.5% of CaO, 0.1 to 20% of TiO.sub.2, and 0.1 to 12% of ZrO.sub.2; has a molar ratio TiO.sub.2/(Li.sub.2O+Na.sub.2O+K.sub.2O+MgO+CaO+SrO+BaO) of 0.3 to 3.5, a molar ratio K.sub.2O/ZrO.sub.2 of 0.9 or greater; and is substantially free of B.sub.2O.sub.3 and Al.sub.2O.sub.3. The technical features of the alkali silicate glass according to an embodiment of the present invention are similar to the technical features of the tube glass according to an embodiment of the present invention, so the detailed description is omitted herein.

[0082] As another aspect, the alkali silicate glass according to an embodiment of the present invention includes a glass composition which contains 1% or less of B.sub.2O.sub.3 and 1% or less of Al.sub.2O.sub.3, in which a chemical resistance factor value, represented by {(the hydrochloric acid consumption H (mL/g) in the hydrolytic resistance test in accordance with ISO 720)?10+(the total cation mass QC of eluted components per unit surface area in an elution test on an acidic solution)?10+(the loss in mass ? in an alkali resistance test in accordance with ISO 695)}, is 98.5 or less. Further, as another aspect, the alkali silicate glass according to an embodiment of the present invention includes a glass composition which: contains, in mol %, 66% or greater and less than 84% of SiO.sub.2, 1% or less of B.sub.2O.sub.3, 1% or less of Al.sub.2O.sub.3, 10% or less of MgO+CaO+SrO+BaO, and 8.5% or less of ZrO.sub.2; and has a molar ratio (Li.sub.2O+Na.sub.2O+K.sub.2O+MgO+CaO+SrO+BaO)/SiO.sub.2 of 0.4 or less. The technical features of the alkali silicate glass according to an embodiment of the present invention are similar to the technical features of the tube glass according to an embodiment of the present invention, so the detailed description is omitted herein.

Examples

[0083] The present invention will be described below based on Examples. However, the present invention is not limited to the following examples, and the following examples are merely illustrative.

[0084] Tables 1 to 11 shows Examples (Sample Nos. 1 to 14, 16 to 28, and 30 to 107) and Comparative Examples (Sample Nos. 15 and 29) of the present invention. In each of the tables, the numerical values in parentheses are predicted values obtained by factor calculation of each component.

TABLE-US-00001 TABLE 1 Unit No. 1 No. 2 No. 3 No. 4 No. 5 Glass SiO.sub.2 mol % 68.70 70.73 72.69 74.55 76.65 composition B.sub.2O.sub.3 0.05 0.01 0.0 0.08 0.1 Al.sub.2O.sub.3 0.01 0.0 0.05 0.1 0.0 Li.sub.2O 0.0 0.0 0.0 0.0 0.0 Na.sub.2O 16.5 16.5 16.5 14.5 12.5 K.sub.2O 0.0 0.0 0.0 0.0 0.0 MgO 0.0 0.2 0.0 0.2 0.1 CaO 0.7 0.5 0.6 0.1 0.5 SrO 0.0 0.0 0.0 0.0 0.0 BaO 0.0 0.0 0.1 0.4 0.1 TiO.sub.2 6.4 6.4 6.4 6.4 6.4 ZrO.sub.2 7.6 5.6 3.6 3.6 3.6 Fe.sub.2O.sub.3 0.005 0.020 0.020 0.030 0.010 SnO.sub.2 0.0 0.0 0.0 0.0 0.0 SO.sub.3 0.040 0.040 0.040 0.040 0.040 ZnO 0.0 0.0 0.0 0.0 0.0 HfO.sub.2 Not Not Not Not Not measured measured measured measured measured P.sub.2O.sub.5 Not Not Not Not Not measured measured measured measured measured Y.sub.2O.sub.3 Not Not Not Not Not measured measured measured measured measured F 0.00 0.00 0.00 0.00 0.00 Cl 0.00 0.00 0.00 0.00 0.00 Li.sub.2O + Na.sub.2O + K.sub.2O 16.5 16.5 16.5 14.5 12.5 MgO + CaO + SrO + BaO 0.7 0.7 0.7 0.7 0.7 K.sub.2O/ZrO.sub.2 0.0 0.0 0.0 0.0 0.0 TiO.sub.2/(Li.sub.2O + Na.sub.2O + K.sub.2O + 0.4 0.4 0.4 0.4 0.5 MgO + CaO + SrO + BaO) (Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + 0.25 0.24 0.24 0.20 0.17 CaO + SrO + BaO)/SiO.sub.2 Hydrolytic resistance ISO 720 (1985) mL/g 0.310 0.427 0.635 0.428 0.277 (Hydrochloric acid Class HGA2 HGA2 HGA2 HGA2 HGA2 consumption H) Acid resistance QC: ? eluted components mg/dm.sup.2 Not Not Not Not Not (Elution evaluation (cation mass) measured measured measured measured measured QC, QO) QO: ? eluted components mg/dm.sup.2 Not Not Not Not Not (oxide mass) measured measured measured measured measured Alkali resistance ISO 695 (199605-15) mg/dm.sup.2 12 17 26 22 21 (loss in mass ?) Class A1 A1 A1 A1 A1 Chemical resistance H ? 10 + QC ? 10 + ? Not Not Not Not Not factor value measured measured measured measured measured Liquidus temperature ? C. 1094 1019 937 1072 1190 Thermal expansion 20 to 300? C. 10.sup.?7/? C. 78.1 79.1 80.9 73.3 65.9 coefficient 30 to 300? C. 78.4 79.3 81.2 73.5 66.1 30 to 380? C. 79.4 80.3 82.2 74.4 66.8 Viscosity 10.sup.2.5 dPa .Math. s ? C. 1354 1344 1324 1367 1431 characteristics 10.sup.3.0 dPa .Math. s 1261 1245 1218 1257 1313 10.sup.4.0 dPa .Math. s 1117 1092 1057 1090 1134 Strain point 833 801 769 788 812 Annealing point 652 622 593 605 621 Softening point 612 583 554 566 580 Average transmittance 400 to 800 nm % 89 89 89 Not Not (thickness: 1 mm) measured measured Unit No. 6 No. 7 No. 8 No. 9 No. 10 Glass SiO.sub.2 mol % 78.63 72.38 78.17 78.69 72.65 composition B.sub.2O.sub.3 0.0 0.3 0.5 0.05 0.1 Al.sub.2O.sub.3 0.08 0.0 0.0 0.01 0.005 Li.sub.2O 0.0 0.0 0.0 0.0 0.0 Na.sub.2O 10.5 10.5 9.5 8.5 8.5 K.sub.2O 0.0 0.0 0.0 0.0 0.0 MgO 0.0 0.7 0.3 0.1 0.3 CaO 0.7 0.0 0.4 0.7 0.7 SrO 0.0 0.0 0.0 0.0 0.0 BaO 0.0 0.0 0.0 0.0 0.0 TiO.sub.2 6.4 6.4 7.4 8.4 8.4 ZrO.sub.2 3.6 9.6 3.6 3.6 9.6 Fe.sub.2O.sub.3 0.050 0.080 0.090 0.008 0.010 SnO.sub.2 0.0 0.0 0.0 0.0 0.0 SO.sub.3 0.040 0.040 0.040 0.040 0.040 ZnO 0.0 0.0 0.0 0.0 0.0 HfO.sub.2 Not Not Not Not Not measured measured measured measured measured P.sub.2O.sub.5 Not Not Not Not Not measured measured measured measured measured Y.sub.2O.sub.3 Not Not Not Not Not measured measured measured measured measured F 0.00 0.00 0.00 0.00 0.00 Cl 0.00 0.00 0.00 0.00 0.00 Li.sub.2O + Na.sub.2O + K.sub.2O 10.5 10.5 9.5 8.5 8.5 MgO + CaO + SrO + BaO 0.7 0.7 0.7 0.8 1.0 K.sub.2O/ZrO.sub.2 0.0 0.0 0.0 0.0 0.0 TiO.sub.2/(Li.sub.2O + Na.sub.2O + K.sub.2O + 0.6 0.6 0.7 0.9 0.9 MgO + CaO + SrO + BaO) (Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + 0.14 0.15 0.13 0.12 0.13 CaO + SrO + BaO)/SiO.sub.2 Hydrolytic resistance ISO 720 (1985) mL/g 0.189 0.100 0.147 0.118 0.073 (Hydrochloric acid Class HGA2 HGA1 HGA2 HGA2 HGA1 consumption H) Acid resistance QC: ? eluted components mg/dm.sup.2 Not Not Not Not Not (Elution evaluation (cation mass) measured measured measured measured measured QC, QO) QO: ? eluted components mg/dm.sup.2 Not Not Not Not Not (oxide mass) measured measured measured measured measured Alkali resistance ISO 695 (199605-15) mg/dm.sup.2 20 9 19 19 11 (loss in mass ?) Class A1 A1 A1 A1 A1 Chemical resistance H ? 10 + QC ? 10 + ? Not Not Not Not Not factor value measured measured measured measured measured Liquidus temperature ? C. 1279 >1450 1308 1332 >1458 Thermal expansion 20 to 300? C. 10.sup.?7/? C. 58.3 57.5 55.0 51.7 51.3 coefficient 30 to 300? C. 58.5 57.7 55.2 51.8 51.5 30 to 380? C. 59.0 58.5 55.6 52.2 52.2 Viscosity 10.sup.2.5 dPa .Math. s ? C. 1493 1505 1523 1546 1520 characteristics 10.sup.3.0 dPa .Math. s 1366 1400 1394 1414 1408 10.sup.4.0 dPa .Math. s 1179 1238 1201 1215 1238 Strain point 839 932 850 860 Not measured Annealing point 638 720 646 653 687 Softening point 596 671 604 611 640 Average transmittance 400 to 800 nm % Not 88 88 86 85 (thickness: 1 mm) measured

TABLE-US-00002 TABLE 2 Unit No. 11 No. 12 No. 13 No. 14 No. 15 Glass SiO.sub.2 mol % 80.59 82.59 80.50 80.58 76.69 composition B.sub.2O.sub.3 0.0 0.0 0.0 0.0 10.0 Al.sub.2O.sub.3 0.0 0.0 0.07 0.0 4.5 Li.sub.2O 0.0 0.0 0.0 0.0 0.0 Na.sub.2O 8.5 8.5 0.0 4.25 6.0 K.sub.2O 0.0 0.0 8.5 4.25 1.5 MgO 0.0 0.2 0.0 0.0 0.0 CaO 0.7 0.5 0.7 0.7 0.8 SrO 0.0 0.0 0.0 0.0 0.0 BaO 0.3 0.3 0.0 0.0 0.5 TiO.sub.2 6.4 4.4 6.4 6.4 0.0 ZrO.sub.2 3.6 3.6 3.6 3.6 0.0 Fe.sub.2O.sub.3 0.009 0.010 0.030 0.020 0.010 SnO.sub.2 0.2 0.2 0.2 0.2 0.0 SO.sub.3 0.000 0.000 0.000 0.000 0.000 ZnO 0.0 0.0 0.0 0.0 0.0 HfO.sub.2 Not Not Not Not Not measured measured measured measured measured P.sub.2O.sub.5 Not Not Not Not Not measured measured measured measured measured Y.sub.2O.sub.3 Not Not Not Not Not measured measured measured measured measured F 0.00 0.00 0.00 0.00 0.00 Cl 0.00 0.00 0.00 0.00 0.00 Li.sub.2O + Na.sub.2O + K.sub.2O 8.5 8.5 8.5 8.5 7.5 MgO + CaO + SrO + BaO 1.0 1.0 0.7 0.7 1.3 K.sub.2O/ZrO.sub.2 0.0 0.0 2.4 1.2 - TiO.sub.2/(Li.sub.2O + Na.sub.2O + K.sub.2O + 0.7 0.5 0.7 0.7 0.0 MgO + CaO + SrO + BaO) (Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + 0.12 0.12 0.11 0.11 0.11 CaO + SrO + BaO)/SiO.sub.2 Hydrolytic resistance ISO 720 (1985) mL/g 0.121 0.127 0.077 0.071 0.030 (Hydrochloric acid Class HGA2 HGA2 HGA1 HGA1 HGA1 consumption H) Acid resistance QC: ? eluted components mg/dm.sup.2 Not Not Not Not Not (Elution evaluation (cation mass) measured measured measured measured measured QC, QO) QO: ? eluted components mg/dm.sup.2 Not Not Not Not Not (oxide mass) measured measured measured measured measured Alkali resistance ISO 695 (199605-15) mg/dm.sup.2 20 18 26 22 145 (loss in mass ?) Class A1 A1 A1 A1 A2 Chemical resistance H ? 10 + QC ? 10 + ? Not Not Not Not Not factor value measured measured measured measured measured Liquidus temperature ? C. 1340 1367 1140 1236 940 Thermal expansion 20 to 300? C. 10.sup.?7/? C. 50.4 49.2 50.3 52.7 Not coefficient measured 30 to 300? C. 50.6 49.4 50.4 52.9 Not measured 30 to 380? C. 50.9 49.6 50.5 53.3 50.0 Viscosity 10.sup.2.5 dPa .Math. s ? C. 1577 1605 1652 1605 Not characteristics measured 10.sup.3.0 dPa .Math. s 1448 1474 1524 1474 1420 10.sup.4.0 dPa .Math. s 1249 1271 1328 1273 1165 Strain point 877 890 957 889 785 Annealing point 660 662 718 660 570 Softening point 616 614 664 612 525 Average transmittance 400 to 800 nm % Not Not Not Not 92 (thickness: 1 mm) measured measured measured measured Unit No. 16 No. 17 No. 18 No. 19 No. 20 Glass SiO.sub.2 mol % 79.90 75.69 77.42 74.40 77.42 composition B.sub.2O.sub.3 0.3 0.5 0.2 0 0 Al.sub.2O.sub.3 0.5 0.05 0 0.3 0.4 Li.sub.2O 0 0 0 0 0 Na.sub.2O 0 0 0 0 0 K.sub.2O 8.4 8.6 8.5 8.5 8.4 MgO 0 0 0 0 0 CaO 0.7 0.7 0.7 0.7 0.7 SrO 0 0 0 0 0 BaO 0 0 0 0 0 TiO.sub.2 8.3 10.6 11.3 14.3 9.3 ZrO.sub.2 1.6 3.6 1.6 1.6 3.5 Fe.sub.2O.sub.3 0.100 0.060 0.080 0.002 0.085 SnO.sub.2 0.2 0.2 0.2 0.2 0.2 SO.sub.3 0.000 0.000 0.000 0.000 0.000 ZnO 0.0 0.0 0.0 0.0 0.0 HfO.sub.2 Not Not Not Not Not measured measured measured measured measured P.sub.2O.sub.5 Not Not Not Not Not measured measured measured measured measured Y.sub.2O.sub.3 Not Not Not Not Not measured measured measured measured measured F 0.00 0.00 0.00 0.00 0.00 Cl 0.00 0.00 0.00 0.00 0.00 Li.sub.2O + Na.sub.2O + K.sub.2O 8.4 8.6 8.5 8.5 8.4 MgO + CaO + SrO + BaO 0.7 0.7 0.7 0.7 0.7 K.sub.2O/ZrO.sub.2 5.3 2.4 5.3 5.3 2.4 TiO.sub.2/(Li.sub.2O + Na.sub.2O + K.sub.2O + 0.9 1.1 1.2 1.6 1.0 MgO + CaO + SrO + BaO) (Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + 0.11 0.12 0.12 0.12 0.12 CaO + SrO + BaO)/SiO.sub.2 Hydrolytic resistance ISO 720 (1985) mL/g 0.088 0.054 0.074 0.061 0.054 (Hydrochloric acid Class HGA1 HGA1 HGA1 HGA1 HGA1 consumption H) Acid resistance QC: ? eluted components mg/dm.sup.2 Not Not Not Not Not (Elution evaluation (cation mass) measured measured measured measured measured QC, QO) QO: ? eluted components mg/dm.sup.2 Not Not Not Not Not (oxide mass) measured measured measured measured measured Alkali resistance ISO 695 (199605-15) mg/dm.sup.2 47 32 48 55 28 (loss in mass ?) Class A1 A1 A1 A1 A1 Chemical resistance H ? 10 + QC ? 10 + ? Not Not Not Not Not factor value measured measured measured measured measured Liquidus temperature ? C. 1197 1070 1143 1105 1090 Thermal expansion 20 to 300? C. 10.sup.?7/? C. Not Not Not Not Not coefficient measured measured measured measured measured 30 to 300? C. Not Not Not Not Not measured measured measured measured measured 30 to 380? C. Not Not Not Not Not measured measured measured measured measured Viscosity 10.sup.2.5 dPa .Math. s ? C. 1606 1586 1561 1518 1611 characteristics 10.sup.3.0 dPa .Math. s 1468 1462 1431 1390 1484 10.sup.4.0 dPa .Math. s 1264 1272 1233 1198 1292 Strain point 903 918 879 853 933 Annealing point 685 691 668 652 700 Softening point 636 641 621 609 647 Average transmittance 400 to 800 nm % Not Not Not Not Not (thickness: 1 mm) measured measured measured measured measured

TABLE-US-00003 TABLE 3 Unit No. 21 No. 22 No. 23 No. 24 No. 25 Glass SiO.sub.2 mol % 80.79 74.93 81.27 76.62 84.79 composition B.sub.2O.sub.3 0.2 0.00 0.00 0.00 0.00 Al.sub.2O.sub.3 0 0.1 0.1 0.1 0.1 Li.sub.2O 0 0.0 0.0 0.0 0.0 Na.sub.2O 0 0.0 0.0 0.0 0.0 K.sub.2O 8.3 8.3 8.1 8.3 8.0 MgO 0 0.0 0.0 0.0 0.0 CaO 0.7 0.7 0.7 0.7 0.7 SrO 0 0.0 0.0 0.0 0.0 BaO 0 0.0 0.0 0.0 0.0 TiO.sub.2 6.3 12.2 6.1 10.4 2.6 ZrO.sub.2 3.500 3.549 3.498 3.561 3.493 Fe.sub.2O.sub.3 0.010 0.004 0.004 0.004 0.005 SnO.sub.2 0.2 0.2 0.2 0.2 0.2 SO.sub.3 0.000 0.003 0.002 0.002 0.002 ZnO 0.0 0.0 0.0 0.0 0.0 HfO.sub.2 Not 0.04 0.04 0.04 0.04 measured P.sub.2O.sub.5 Not 0.03 0.02 0.02 0.01 measured Y.sub.2O.sub.3 Not 0.00 0.00 0.00 0.00 measured Glass F mol % 0.00 0.00 0.00 0.00 0.00 composition Cl 0.00 0.00 0.00 0.00 0.00 Li.sub.2O + Na.sub.2O + K.sub.2O 8.3 8.3 8.1 8.4 8.1 MgO + CaO + SrO + BaO 0.7 0.7 0.7 0.7 0.7 K.sub.2O/ZrO.sub.2 2.4 2.3 2.3 2.3 2.3 TiO.sub.2/(Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + 0.7 1.3 0.7 1.1 0.3 CaO + SrO + BaO) (Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + CaO + 0.11 0.12 0.11 0.12 0.10 SrO + BaO)/SiO.sub.2 Hydrolytic resistance ISO 720(1985) mL/g 0.064 0.047 0.062 0.051 0.078 (Hydrochloric acid Class HGA1 HGA1 HGA1 HGA1 HGA1 consumption H) Acid resistance QC: ? eluted components mg/dm.sup.2 Not Not Not Not Not (Elution evaluation (cation mass) measured measured measured measured measured QC, QO) QO: ? eluted components mg/dm.sup.2 Not Not Not Not Not (oxide weight) measured measured measured measured measured Alkali resistance ISO 695(199605-15) mg/dm.sup.2 26 33 28 30 25 (loss in mass ?) Class A1 A1 A1 A1 A1 Chemical resistance H ? 10 + QC ? 10 + ? Not Not Not Not Not factor value measured measured measured measured measured Liquidus temperature ? C. 1146 1121 1146 1255 1234 Thermal expansion 20 to 300? C. 10.sup.?7/? C. Not Not Not Not Not coefficient measured measured measured measured measured 30 to 300? C. Not Not Not Not Not measured measured measured measured measured 30 to 380? C. Not Not Not Not Not measured measured measured measured measured Viscosity 10.sup.2.5 dPa .Math. s ? C. 1660 Not 1664 1594 1714 characteristics measured 10.sup.3.0 dPa .Math. s 1530 Not 1531 1470 1577 measured 10.sup.4.0 dPa .Math. s 1332 Not 1332 1279 1370 measured Strain point 960 Not Not Not Not measured measured measured measured Annealing point 719 Not Not Not Not measured measured measured measured Softening point 665 Not Not Not Not measured measured measured measured Average transmittance 400 to 800 nm % Not Not Not Not Not (thickness: 1 mm) measured measured measured measured measured Unit No. 26 No. 27 No. 28 No. 29 No. 30 Glass SiO.sub.2 mol % 86.53 81.11 77.62 84.88 69.94 composition B.sub.2O.sub.3 0.00 0.00 0.00 0.00 0.00 Al.sub.2O.sub.3 0.1 0.1 0.1 0.0 0.1 Li.sub.2O 0.0 0.0 0.0 0.0 0.0 Na.sub.2O 0.0 0.0 0.0 0.0 0.0 K.sub.2O 8.7 8.1 8.1 8.1 8.2 MgO 0.0 0.0 0.0 0.0 0.0 CaO 0.8 0.7 0.7 0.7 0.7 SrO 0.0 0.0 0.0 0.0 0.0 BaO 0.0 0.0 0.0 0.0 0.0 TiO.sub.2 0.1 2.6 6.1 6.0 17.2 ZrO.sub.2 3.598 6.970 6.988 0.010 3.578 Fe.sub.2O.sub.3 0.005 0.006 0.006 0.002 0.004 SnO.sub.2 0.2 0.2 0.2 0.2 0.2 SO.sub.3 0.002 0.006 0.006 0.000 0.003 ZnO 0.0 0.0 0.0 0.0 0.0 HfO.sub.2 0.04 0.08 0.09 0.00 0.04 P.sub.2O.sub.5 0.01 0.02 0.02 0.01 0.03 Y.sub.2O.sub.3 0.00 0.01 0.01 0.00 0.00 Glass F mol % 0.00 0.00 0.00 0.00 0.00 composition Cl 0.00 0.00 0.00 0.00 0.00 Li.sub.2O + Na.sub.2O + K.sub.2O 8.7 8.1 8.2 8.2 8.2 MgO + CaO + SrO + BaO 0.8 0.7 0.7 0.7 0.7 K.sub.2O/ZrO.sub.2 2.4 1.2 1.2 778.4 2.3 TiO.sub.2/(Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + 0.0 0.3 0.7 0.7 1.9 CaO + SrO + BaO) (Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + CaO + 0.11 0.11 0.11 0.10 0.13 SrO + BaO)/SiO.sub.2 Hydrolytic resistance ISO 720(1985) mL/g 0.161 0.047 0.044 0.200 0.039 (Hydrochloric acid Class HGA2 HGA1 HGA1 HGA2 HGA1 consumption H) Acid resistance QC: ? eluted components mg/dm.sup.2 Not Not Not Not Not (Elution evaluation (cation mass) measured measured measured measured measured QC, QO) QO: ? eluted components mg/dm.sup.2 Not Not Not Not Not (oxide weight) measured measured measured measured measured Alkali resistance ISO 695(199605-15) mg/dm.sup.2 23 17 19 80 32 (loss in mass ?) Class A1 A1 A1 A2 A1 Chemical resistance H ? 10 + QC ? 10 + ? Not Not Not Not Not factor value measured measured measured measured measured Liquidus temperature ? C. 1359 1189 1077 1329 >1212.8 Thermal expansion 20 to 300? C. 10.sup.?7/? C. Not Not Not Not Not coefficient measured measured measured measured measured 30 to 300? C. Not Not Not Not Not measured measured measured measured measured 30 to 380? C. Not Not Not Not Not measured measured measured measured measured Viscosity 10.sup.2.5 dPa .Math. s ? C. Not Not Not 1601 1476 characteristics measured measured measured 10.sup.3.0 dPa .Math. s Not Not Not 1456 1359 measured measured measured 10.sup.4.0 dPa .Math. s Not Not Not 1237 1181 measured measured measured Strain point Not Not Not Not Not measured measured measured measured measured Annealing point Not Not Not Not Not measured measured measured measured measured Softening point Not Not Not Not Not measured measured measured measured measured Average transmittance 400 to 800 nm % Not Not Not Not Not (thickness: 1 mm) measured measured measured measured measured

TABLE-US-00004 TABLE 4 Unit No. 31 No. 32 No. 33 No. 34 No. 35 Glass SiO.sub.2 mol % 71.78 73.45 73.50 73.46 75.20 composition B.sub.2O.sub.3 0.00 0.00 0.00 0.00 0.00 Al.sub.2O.sub.3 0.1 0.1 0.0 0.1 0.1 Li.sub.2O 0.0 0.0 0.0 0.0 0.0 Na.sub.2O 0.0 0.0 0.0 0.0 0.0 K.sub.2O 8.1 8.2 8.2 8.1 8.2 MgO 0.0 0.0 0.0 0.0 0.0 CaO 0.7 0.7 0.7 0.7 0.7 SrO 0.0 0.0 0.0 0.0 0.0 BaO 0.0 0.0 0.0 0.0 0.0 TiO.sub.2 15.4 13.7 15.4 12.0 10.2 ZrO.sub.2 3.578 3.571 1.860 5.303 5.308 Fe.sub.2O.sub.3 0.004 0.004 0.003 0.006 0.006 SnO.sub.2 0.2 0.2 0.2 0.2 0.2 SO.sub.3 0.003 0.003 0.000 0.004 0.004 ZnO 0.0 0.0 0.0 0.0 0.0 HfO.sub.2 0.04 0.04 0.02 0.06 0.06 P.sub.2O.sub.5 0.03 0.03 0.03 0.03 0.03 Y.sub.2O.sub.3 0.00 0.00 0.00 0.01 0.01 Glass F mol % 0.00 0.00 0.00 0.00 0.00 composition Cl 0.00 0.00 0.00 0.00 0.00 Li.sub.2O + Na.sub.2O + K.sub.2O 8.2 8.2 8.2 8.1 8.2 MgO + CaO + SrO + BaO 0.7 0.7 0.7 0.7 0.7 K.sub.2O/ZrO.sub.2 2.3 2.3 4.4 1.5 1.5 TiO.sub.2/(Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + 1.7 1.5 1.7 1.4 1.1 CaO + SrO + BaO) (Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + CaO + 0.12 0.12 0.12 0.12 0.12 SrO + BaO)/SiO.sub.2 Hydrolytic resistance ISO 720(1985) mL/g 0.041 0.045 0.052 0.038 0.042 (Hydrochloric acid Class HGA1 HGA1 HGA1 HGA1 HGA1 consumption H) Acid resistance QC: ? eluted components mg/dm.sup.2 Not Not Not Not Not (Elution evaluation (cation mass) measured measured measured measured measured QC, QO) QO: ? eluted components mg/dm.sup.2 Not Not Not Not Not (oxide mass) measured measured measured measured measured Alkali resistance ISO 695(199605-15) mg/dm.sup.2 36 35 53 24 24 (loss in mass ?) Class A1 A1 A1 A1 A1 Chemical resistance H ? 10 + QC ? 10 + ? Not Not Not Not Not factor value measured measured measured measured measured Liquidus temperature ? C. >1149.0 >1181.2 >1183.7 >1155.5 1135 Thermal expansion 20 to 300? C. 10.sup.?7/? C. Not Not Not Not Not coefficient measured measured measured measured measured 30 to 300? C. Not Not Not Not Not measured measured measured measured measured 30 to 380? C. Not Not Not Not Not measured measured measured measured measured Viscosity 10.sup.2.5 dPa .Math. s ? C. 1510 1544 1508 1572 1609 characteristics 10.sup.3.0 dPa .Math. s 1392 1421 1384 1454 1489 10.sup.4.0 dPa .Math. s 1208 1235 1194 1272 1304 Strain point Not Not Not Not Not measured measured measured measured measured Annealing point Not Not Not Not Not measured measured measured measured measured Softening point Not Not Not Not Not measured measured measured measured measured Average transmittance 400 to 800 nm % Not Not Not Not Not (thickness: 1 mm) measured measured measured measured measured Unit No. 36 No. 37 No. 38 No. 39 No. 40 Glass SiO.sub.2 mol % 77.02 83.26 73.78 74.79 75.77 composition B.sub.2O.sub.3 0.00 0.00 0.00 0.00 0.00 Al.sub.2O.sub.3 0.1 0.1 0.1 0.1 0.1 Li.sub.2O 0.0 0.0 0.0 0.0 0.0 Na.sub.2O 0.0 0.0 0.0 0.0 0.0 K.sub.2O 8.1 8.1 9.4 9.4 9.4 MgO 0.0 0.0 0.0 0.0 0.0 CaO 0.7 0.7 0.7 0.7 0.7 SrO 0.0 0.0 0.0 0.0 0.0 BaO 0.0 0.0 0.0 0.0 0.0 TiO.sub.2 8.4 3.9 10.4 9.5 8.5 ZrO.sub.2 5.304 3.582 5.248 5.242 5.236 Fe.sub.2O.sub.3 0.006 0.005 0.006 0.006 0.006 SnO.sub.2 0.2 0.2 0.2 0.2 0.2 SO.sub.3 0.003 0.002 0.004 0.004 0.004 ZnO 0.0 0.0 0.0 0.0 0.0 HfO.sub.2 0.06 0.04 0.06 0.06 0.06 P.sub.2O.sub.5 0.02 0.01 0.02 0.02 0.02 Y.sub.2O.sub.3 0.01 0.00 0.01 0.01 0.01 Glass F mol % 0.00 0.00 0.00 0.00 0.00 composition Cl 0.00 0.00 0.00 0.00 0.00 Li.sub.2O + Na.sub.2O + K.sub.2O 8.1 8.2 9.5 9.4 9.4 MgO + CaO + SrO + BaO 0.7 0.7 0.7 0.7 0.7 K.sub.2O/ZrO.sub.2 1.5 2.3 1.8 1.8 1.8 TiO.sub.2/(Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + 1.0 0.4 1.0 0.9 0.8 CaO + SrO + BaO) (Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + CaO + 0.12 0.11 0.14 0.14 0.13 SrO + BaO)/SiO.sub.2 Hydrolytic resistance ISO 720(1985) mL/g 0.044 0.074 0.056 0.062 0.065 (Hydrochloric acid Class HGA1 HGA1 HGA1 HGA1 HGA1 consumption H) Acid resistance QC: ? eluted components mg/dm.sup.2 Not Not 1.2 1.4 1.1 (Elution evaluation (cation mass) measured measured QC, QO) QO: ? eluted components mg/dm.sup.2 Not Not 2.0 2.5 1.8 (oxide mass) measured measured Alkali resistance ISO 695(199605-15) mg/dm.sup.2 21 24 23 22 21 (loss in mass ?) Class A1 A1 A1 A1 A1 Chemical resistance H ? 10 + QC ? 10 + ? Not Not 35 36 32 factor value measured measured Liquidus temperature ? C. 1127 1194 1068 1042 1149 Thermal expansion 20 to 300? C. 10.sup.?7/? C. Not Not Not Not Not coefficient measured measured measured measured measured 30 to 300? C. Not Not Not Not Not measured measured measured measured measured 30 to 380? C. Not Not Not Not Not measured measured measured measured measured Viscosity 10.sup.2.5 dPa .Math. s ? C. 1641 1705 1560 1581 1597 characteristics 10.sup.3.0 dPa .Math. s 1518 1569 1446 1466 1481 10.sup.4.0 dPa .Math. s 1331 1365 1270 1288 1302 Strain point Not Not Not Not Not measured measured measured measured measured Annealing point Not Not Not Not Not measured measured measured measured measured Softening point Not Not Not Not Not measured measured measured measured measured Average transmittance 400 to 800 nm % Not Not Not Not Not (thickness: 1 mm) measured measured measured measured measured

TABLE-US-00005 TABLE 5 Unit No. 41 No. 42 No. 43 No. 44 No. 45 Glass SiO.sub.2 mol % 73.74 74.90 73.75 72.65 72.96 composition B.sub.2O.sub.3 0.00 0.00 0.00 0.00 0.00 Al.sub.2O.sub.3 0.1 0.1 0.1 0.1 0.1 Li.sub.2O 0.0 0.0 0.0 0.0 0.0 Na.sub.2O 0.0 0.0 0.0 0.4 0.0 K.sub.2O 9.4 9.4 9.4 8.4 8.4 MgO 0.0 0.0 0.0 0.0 0.0 CaO 0.7 0.7 0.7 0.7 2.4 SrO 0.0 0.0 0.0 0.0 0.0 BaO 0.0 0.0 0.0 0.0 0.0 TiO.sub.2 9.5 8.5 8.5 10.5 10.5 ZrO.sub.2 6.199 6.115 7.135 5.253 5.228 Fe.sub.2O.sub.3 0.006 0.006 0.066 0.006 0.006 SnO.sub.2 0.2 0.2 0.2 0.2 0.2 SO.sub.3 0.005 0.005 0.006 0.003 0.004 ZnO 0.0 0.0 0.0 1.7 0.0 HfO.sub.2 0.07 0.07 0.08 0.05 0.06 P.sub.2O.sub.5 0.03 0.02 0.02 0.03 0.03 Y.sub.2O.sub.3 0.01 0.01 0.01 0.01 0.01 Glass F mol % 0.00 0.00 0.00 0.00 0.00 composition Cl 0.00 0.00 0.00 0.00 0.00 Li.sub.2O + Na.sub.2O + K.sub.2O 9.5 9.4 9.5 8.9 8.5 MgO + CaO + SrO + BaO 0.7 0.7 0.7 0.7 2.5 K.sub.2O/ZrO.sub.2 1.5 1.5 1.3 1.6 1.6 TiO.sub.2/(Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + 0.9 0.8 0.8 1.1 1.0 CaO + SrO + BaO) (Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + CaO + 0.14 0.14 0.14 0.13 0.15 SrO + BaO)/SiO.sub.2 Hydrolytic resistance ISO 720(1985) mL/g 0.057 0.057 0.054 0.047 0.047 (Hydrochloric acid Class HGA1 HGA1 HGA1 HGA1 HGA1 consumption H) Acid resistance QC: ? eluted components mg/dm.sup.2 1.5 1.2 1.4 Not 1.5 (Elution evaluation (cation mass) measured QC, QO) QO: ? eluted components mg/dm.sup.2 2.6 2.1 2.4 Not 2.6 (oxide mass) measured Alkali resistance ISO 695(199605-15) mg/dm.sup.2 19 18 17 24 22 (loss in mass ?) Class A1 A1 A1 A1 A1 Chemical resistance H ? 10 + QC ? 10 + ? 34 30 32 Not 37 factor value measured Liquidus temperature ? C. 1076 1173 1235 1150 1153 Thermal expansion 20 to 300? C. 10.sup.?7/? C. Not Not Not Not Not coefficient measured measured measured measured measured 30 to 300? C. Not Not Not Not Not measured measured measured measured measured 30 to 380? C. Not Not Not Not Not measured measured measured measured measured Viscosity 10.sup.2.5 dPa .Math. s ? C. 1583 Not Not 1564 1548 characteristics measured measured 10.sup.3.0 dPa .Math. s 1469 Not Not 1448 1433 measured measured 10.sup.4.0 dPa .Math. s 1295 Not Not 1269 1258 measured measured Strain point Not Not Not Not Not measured measured measured measured measured Annealing point Not Not Not Not Not measured measured measured measured measured Softening point Not Not Not Not Not measured measured measured measured measured Average transmittance 400 to 800 nm % Not Not Not Not Not (thickness: 1 mm) measured measured measured measured measured Unit No. 46 No. 47 No. 48 No. 49 No. 50 Glass SiO.sub.2 mol % 74.75 73.63 74.41 73.71 75.99 composition B.sub.2O.sub.3 0.00 0.00 0.00 0.00 0.00 Al.sub.2O.sub.3 0.1 0.1 0.1 0.1 0.1 Li.sub.2O 0.0 0.0 0.0 0.0 0.0 Na.sub.2O 0.1 0.0 0.1 0.1 0.0 K.sub.2O 10.4 10.4 10.4 10.3 10.3 MgO 0.0 0.0 0.0 0.0 0.0 CaO 0.0 0.0 0.0 0.0 0.0 SrO 0.0 0.0 0.0 0.0 0.0 BaO 0.0 0.0 0.0 0.0 0.0 TiO.sub.2 9.2 10.0 9.4 10.0 9.1 ZrO.sub.2 5.215 5.534 5.336 5.547 4.216 Fe.sub.2O.sub.3 0.006 0.006 0.006 0.007 0.006 SnO.sub.2 0.2 0.2 0.2 0.2 0.2 SO.sub.3 0.004 0.004 0.004 0.004 0.003 ZnO 0.0 0.0 0.0 0.0 0.0 HfO.sub.2 0.06 0.07 0.06 0.07 0.05 P.sub.2O.sub.5 0.02 0.02 0.02 0.02 0.02 Y.sub.2O.sub.3 0.01 0.01 0.01 0.01 0.01 Glass F mol % 0.00 0.00 0.00 0.00 0.00 composition Cl 0.00 0.00 0.00 0.00 0.00 Li.sub.2O + Na.sub.2O + K.sub.2O 10.5 10.4 10.4 10.3 10.3 MgO + CaO + SrO + BaO 0.0 0.0 0.0 0.0 0.0 K.sub.2O/ZrO.sub.2 2.0 1.9 1.9 1.8 2.4 TiO.sub.2/(Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + 0.9 1.0 0.9 1.0 0.9 CaO + SrO + BaO) (Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + CaO + 0.14 0.14 0.14 0.14 0.14 SrO + BaO)/SiO.sub.2 Hydrolytic resistance ISO 720(1985) mL/g 0.083 0.080 0.084 0.080 0.097 (Hydrochloric acid Class HGA1 HGA1 HGA1 HGA1 HGA1 consumption H) Acid resistance QC: ? eluted components mg/dm.sup.2 1.4 1.4 1.3 1.4 1.1 (Elution evaluation (cation mass) QC, QO) QO: ? eluted components mg/dm.sup.2 2.5 2.5 2.3 2.5 2.0 (oxide mass) Alkali resistance ISO 695(199605-15) mg/dm.sup.2 23 22 23 22 28 (loss in mass ?) Class A1 A1 A1 A1 A1 Chemical resistance H ? 10 + QC ? 10 + ? 38 37 36 38 40 factor value Liquidus temperature ? C. 1088 1098 1078 1095 1067 Thermal expansion 20 to 300? C. 10.sup.?7/? C. Not Not Not Not Not coefficient measured measured measured measured measured 30 to 300? C. Not Not Not Not Not measured measured measured measured measured 30 to 380? C. Not Not Not Not Not measured measured measured measured measured Viscosity 10.sup.2.5 dPa .Math. s ? C. 1574 1562 1572 1565 1573 characteristics 10.sup.3.0 dPa .Math. s 1460 1449 1459 1452 1454 10.sup.4.0 dPa .Math. s 1284 1276 1284 1280 1272 Strain point Not Not Not Not Not measured measured measured measured measured Annealing point Not Not Not Not Not measured measured measured measured measured Softening point Not Not Not Not Not measured measured measured measured measured Average transmittance 400 to 800 nm % Not Not Not Not Not (thickness: 1 mm) measured measured measured measured measured

TABLE-US-00006 TABLE 6 Unit No. 51 No. 52 No. 53 No. 54 No. 55 Glass SiO.sub.2 mol % 75.69 75.68 75.73 75.75 75.67 composition B.sub.2O.sub.3 0.00 0.00 0.00 0.00 0.00 Al.sub.2O.sub.3 0.1 0.1 0.1 0.1 0.1 Li.sub.2O 0.0 0.0 0.0 0.0 0.0 Na.sub.2O 0.0 0.0 0.0 0.0 0.0 K.sub.2O 10.8 10.3 10.0 9.7 9.6 MgO 0.0 0.0 0.0 0.0 0.0 CaO 0.0 0.7 1.2 1.4 1.6 SrO 0.0 0.0 0.0 0.0 0.0 BaO 0.0 0.0 0.0 0.0 0.0 TiO.sub.2 8.5 8.5 8.5 8.5 8.5 ZrO.sub.2 4.632 4.449 4.239 4.251 4.252 Fe.sub.2O.sub.3 0.007 0.006 0.007 0.007 0.007 SnO.sub.2 0.2 0.2 0.2 0.2 0.2 SO.sub.3 0.004 0.004 0.004 0.003 0.003 ZnO 0.0 0.0 0.0 0.0 0.0 HfO.sub.2 0.06 0.05 0.05 0.05 0.05 P.sub.2O.sub.5 0.02 0.02 0.02 0.02 0.02 Y.sub.2O.sub.3 0.01 0.01 0.01 0.01 0.01 Glass F mol % 0.00 0.00 0.00 0.00 0.00 composition Cl 0.00 0.00 0.00 0.00 0.00 Li.sub.2O + Na.sub.2O + K.sub.2O 10.8 10.3 10.0 9.8 9.6 MgO + CaO + SrO + BaO 0.0 0.7 1.2 1.4 1.6 K.sub.2O/ZrO.sub.2 2.3 2.3 2.4 2.3 2.3 TiO.sub.2/(Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + 0.8 0.8 0.8 0.8 0.8 CaO + SrO + BaO) (Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + CaO + 0.14 0.15 0.15 0.15 0.15 SrO + BaO)/SiO.sub.2 Hydrolytic resistance ISO 720(1985) mL/g 0.111 0.088 0.090 0.085 0.077 (Hydrochloric acid Class HGA2 HGA1 HGA1 HGA1 HGA1 consumption H) Acid resistance QC: ? eluted components mg/dm.sup.2 1.4 1.2 1.2 1.1 1.1 (Elution evaluation (cation mass) QC, QO) QO: ? eluted components mg/dm.sup.2 2.4 2.2 2.2 1.9 1.9 (oxide mass) Alkali resistance ISO 695(199605-15) mg/dm.sup.2 25 26 25 25 25 (loss in mass ?) Class A1 A1 A1 A1 A1 Chemical resistance H ? 10 + QC ? 10 + ? 40 39 38 37 36 factor value Liquidus temperature ? C. 1078 1077 1090 1075 1093 Thermal expansion 20 to 300? C. 10.sup.?7/? C. Not Not Not Not Not coefficient measured measured measured measured measured 30 to 300? C. Not Not Not Not Not measured measured measured measured measured 30 to 380? C. Not Not Not Not Not measured measured measured measured measured Viscosity 10.sup.2.5 dPa .Math. s ? C. 1572 1569 1561 1565 1570 characteristics 10.sup.3.0 dPa .Math. s 1456 1453 1443 1351 1452 10.sup.4.0 dPa .Math. s 1278 1274 1263 1269 1272 Strain point Not Not Not Not Not measured measured measured measured measured Annealing point Not Not Not Not Not measured measured measured measured measured Softening point Not Not Not Not Not measured measured measured measured measured Average transmittance 400 to 800 nm % Not Not Not Not Not (thickness: 1 mm) measured measured measured measured measured Unit No. 56 No. 57 No. 58 No. 59 No. 60 Glass SiO.sub.2 mol % 75.35 75.30 75.30 75.3 75.3 composition B.sub.2O.sub.3 0.00 0.00 0.00 0.00 0.00 Al.sub.2O.sub.3 0.1 0.0 0.0 0.0 0.0 Li.sub.2O 0.0 0.0 0.0 0.0 0.0 Na.sub.2O 0.0 0.0 0.0 0.0 0.0 K.sub.2O 9.9 10.0 10.0 10.0 10.1 MgO 0.0 0.0 0.0 0.0 0.0 CaO 1.2 1.2 1.2 1.3 1.1 SrO 0.0 0.0 0.0 0.0 0.0 BaO 0.0 0.0 0.0 0.0 0.0 TiO.sub.2 8.9 9.2 9.3 9.2 9.4 ZrO.sub.2 4.249 4.100 4.000 4.000 3.900 Fe.sub.2O.sub.3 0.007 Not Not Not Not measured measured measured measured SnO.sub.2 0.2 0.2 0.2 0.2 0.2 SO.sub.3 0.003 Not Not Not Not measured measured measured measured ZnO 0.0 Not Not Not Not measured measured measured measured HfO.sub.2 0.05 Not Not Not Not measured measured measured measured P.sub.2O.sub.5 0.02 Not Not Not Not measured measured measured measured Y.sub.2O.sub.3 0.01 Not Not Not Not measured measured measured measured Glass F mol % 0.00 0.00 0.00 0.00 0.00 composition Cl 0.00 0.00 0.00 0.00 0.00 Li.sub.2O + Na.sub.2O + K.sub.2O 10.0 10.0 10.0 10.0 10.1 MgO + CaO + SrO + BaO 1.2 1.2 1.2 1.3 1.1 K.sub.2O/ZrO.sub.2 2.3 2.4 2.5 2.5 2.6 TiO.sub.2/(Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + 0.8 0.8 0.8 0.8 0.8 CaO + SrO + BaO) (Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + CaO + 0.15 0.15 0.15 0.15 0.15 SrO + BaO)/SiO.sub.2 Hydrolytic resistance ISO 720(1985) mL/g 0.084 (0.009) (0.092) (0.090) (0.096) (Hydrochloric acid Class HGA1 Not Not Not Not consumption H) measured measured measured measured Acid resistance QC: ? eluted components mg/dm.sup.2 1.2 Not Not Not Not (Elution evaluation (cation mass) measured measured measured measured QC, QO) QO: ? eluted components mg/dm.sup.2 2.1 Not Not Not Not (oxide mass) measured measured measured measured Alkali resistance ISO 695(199605-15) mg/dm.sup.2 25 Not Not Not Not (loss in mass ?) measured measured measured measured Class A1 Not Not Not Not measured measured measured measured Chemical resistance H ? 10 + QC ? 10 + ? 38 Not Not Not Not factor value measured measured measured measured Liquidus temperature ? C. 1094 Not Not Not Not measured measured measured measured Thermal expansion 20 to 300? C. 10.sup.?7/? C. Not Not Not Not Not coefficient measured measured measured measured measured 30 to 300? C. Not Not Not Not Not measured measured measured measured measured 30 to 380? C. Not Not Not Not Not measured measured measured measured measured Viscosity 10.sup.2.5 dPa .Math. s ? C. 1559 Not Not Not Not characteristics measured measured measured measured 10.sup.3.0 dPa .Math. s 1442 Not Not Not Not measured measured measured measured 10.sup.4.0 dPa .Math. s 1264 (1243) (1240) (1239) (1237) Strain point Not Not Not Not Not measured measured measured measured measured Annealing point Not Not Not Not Not measured measured measured measured measured Softening point Not Not Not Not Not measured measured measured measured measured Average transmittance 400 to 800 nm % Not Not Not Not Not (thickness: 1 mm) measured measured measured measured measured

TABLE-US-00007 TABLE 7 Unit No. 61 No. 62 No. 63 No. 64 No. 65 Glass SiO.sub.2 mol % 75.1 75.3 80.6 80.6 75.3 composition B.sub.2O.sub.3 0.0 0.0 0.0 0.0 0.0 Al.sub.2O.sub.3 0.0 0.0 0.0 0.0 0.0 Li.sub.2O 0.0 0.0 0.0 0.0 3.0 Na.sub.2O 0.0 0.2 2.0 1.0 0.0 K.sub.2O 9.9 9.8 6.5 7.5 7.0 MgO 0.0 0.0 0.0 0.0 0.0 CaO 1.6 1.2 0.7 0.7 1.2 SrO 0.0 0.0 0.0 0.0 0.0 BaO 0.0 0.0 0.0 0.0 0.0 TiO.sub.2 9.2 9.0 6.4 6.4 9.2 ZrO.sub.2 4.000 4.300 3.600 3.600 4.100 Fe.sub.2O.sub.3 Not Not Not Not Not measured measured measured measured measured SnO.sub.2 0.2 0.2 0.2 0.2 0.2 SO.sub.3 Not Not Not Not Not measured measured measured measured measured ZnO Not Not Not Not Not measured measured measured measured measured HfO.sub.2 Not Not Not Not Not measured measured measured measured measured P.sub.2O.sub.5 Not Not Not Not Not measured measured measured measured measured Y.sub.2O.sub.3 Not Not Not Not Not measured measured measured measured measured Glass F mol % 0.0 0.0 0.0 0.0 0.0 composition Cl 0.00 0.00 0.00 0.00 0.00 Li.sub.2O + Na.sub.2O + K.sub.2O 9.9 10.0 8.5 8.5 10.0 MgO + CaO + SrO + BaO 1.6 1.2 0.7 0.7 1.2 K.sub.2O/ZrO.sub.2 2.5 2.3 1.8 2.1 1.7 TiO.sub.2/(Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + 0.8 0.8 0.7 0.7 0.8 CaO + SrO + BaO) (Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + CaO + 0.15 0.15 0.11 0.11 0.15 SrO + BaO)/SiO.sub.2 Hydrolytic resistance ISO 720(1985) mL/g (0.091) Not Not Not Not (Hydrochloric acid measured measured measured measured consumption H) Class Not Not Not Not Not measured measured measured measured measured Acid resistance QC: ? eluted components mg/dm.sup.2 Not Not Not Not Not (Elution evaluation (cation mass) measured measured measured measured measured QC, QO) QO: ? eluted components mg/dm.sup.2 Not Not Not Not Not (oxide mass) measured measured measured measured measured Alkali resistance ISO 695(199605-15) mg/dm.sup.2 Not Not Not Not Not (loss in mass ?) measured measured measured measured measured Class Not Not Not Not Not measured measured measured measured measured Chemical resistance H ? 10 + QC ? 10 + ? Not Not Not Not Not factor value measured measured measured measured measured Liquidus temperature ? C. Not Not Not Not Not measured measured measured measured measured Thermal expansion 20 to 300? C. 10.sup.?7/? C. Not Not Not Not Not coefficient measured measured measured measured measured 30 to 300? C. Not Not Not Not Not measured measured measured measured measured 30 to 380? C. Not Not Not Not Not measured measured measured measured measured Viscosity 10.sup.2.5 dPa .Math. s ? C. Not Not Not Not Not characteristics measured measured measured measured measured 10.sup.3.0 dPa .Math. s Not Not Not Not Not measured measured measured measured measured 10.sup.4.0 dPa .Math. s (1236) Not Not Not Not measured measured measured measured Strain point Not Not Not Not Not measured measured measured measured measured Annealing point Not Not Not Not Not measured measured measured measured measured Softening point Not Not Not Not Not measured measured measured measured measured Average transmittance 400 to 800 nm % Not Not Not Not Not (thickness: 1 mm) measured measured measured measured measured Unit No. 66 No. 67 No. 68 No. 69 No. 70 Glass SiO.sub.2 mol % 75.3 79.6 78.6 78.6 78.4 composition B.sub.2O.sub.3 0.0 0.0 0.0 0.0 0.0 Al.sub.2O.sub.3 0.0 0.1 0.1 0.1 0.1 Li.sub.2O 5.0 0.0 0.0 0.0 0.0 Na.sub.2O 0.0 0.0 0.0 0.0 0.5 K.sub.2O 5.0 9.9 10.3 9.3 8.8 MgO 0.0 0.0 0.0 0.0 0.0 CaO 1.2 1.2 1.3 1.3 1.3 SrO 0.0 0.0 0.0 0.0 0.0 BaO 0.0 0.0 0.0 0.0 0.0 TiO.sub.2 9.2 8.9 9.3 10.3 10.3 ZrO.sub.2 4.100 0.005 0.005 0.005 0.005 Fe.sub.2O.sub.3 Not Not Not Not Not measured measured measured measured measured SnO.sub.2 0.2 0.1 0.1 0.1 0.3 SO.sub.3 Not Not Not Not Not measured measured measured measured measured ZnO Not Not Not Not Not measured measured measured measured measured HfO.sub.2 Not Not Not Not Not measured measured measured measured measured P.sub.2O.sub.5 Not Not Not Not Not measured measured measured measured measured Y.sub.2O.sub.3 Not Not Not Not Not measured measured measured measured measured Glass F mol % 0.0 0.2 0.1 0.2 0.1 composition Cl 0.00 0.05 0.15 0.05 0.15 Li.sub.2O + Na.sub.2O + K.sub.2O 10.0 9.9 10.3 9.3 9.3 MgO + CaO + SrO + BaO 1.2 1.2 1.3 1.3 1.3 K.sub.2O/ZrO.sub.2 1.2 1980 2060 1860 1760 TiO.sub.2/(Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + 0.8 0.8 0.8 1.0 1.0 CaO + SrO + BaO) (Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + CaO + 0.15 0.14 0.15 0.13 0.14 SrO + BaO)/SiO.sub.2 Hydrolytic resistance ISO 720(1985) mL/g Not Not Not Not Not (Hydrochloric acid measured measured measured measured measured consumption H) Class Not Not Not Not Not measured measured measured measured measured Acid resistance QC: ? eluted components mg/dm.sup.2 Not Not Not Not Not (Elution evaluation (cation mass) measured measured measured measured measured QC, QO) QO: ? eluted components mg/dm.sup.2 Not Not Not Not Not (oxide mass) measured measured measured measured measured Alkali resistance ISO 695(199605-15) mg/dm.sup.2 Not Not Not Not Not (loss in mass ?) measured measured measured measured measured Class Not Not Not Not Not measured measured measured measured measured Chemical resistance H ? 10 + QC ? 10 + ? Not Not Not Not Not factor value measured measured measured measured measured Liquidus temperature ? C. Not Not Not Not Not measured measured measured measured measured Thermal expansion 20 to 300? C. 10.sup.?7/? C. Not Not Not Not Not coefficient measured measured measured measured measured 30 to 300? C. Not Not Not Not Not measured measured measured measured measured 30 to 380? C. Not Not Not Not Not measured measured measured measured measured Viscosity 10.sup.2.5 dPa .Math. s ? C. Not Not Not Not Not characteristics measured measured measured measured measured 10.sup.3.0 dPa .Math. s Not Not Not Not Not measured measured measured measured measured 10.sup.4.0 dPa .Math. s Not Not Not Not Not measured measured measured measured measured Strain point Not Not Not Not Not measured measured measured measured measured Annealing point Not Not Not Not Not measured measured measured measured measured Softening point Not Not Not Not Not measured measured measured measured measured Average transmittance 400 to 800 nm % Not Not Not Not Not (thickness: 1 mm) measured measured measured measured measured

TABLE-US-00008 TABLE 8 Unit No. 71 No. 72 No. 73 No. 74 No. 75 Glass SiO.sub.2 mol % 78.6 79.0 78.2 78.0 77.5 composition B.sub.2O.sub.3 0.0 0.0 0.0 0.0 0.0 Al.sub.2O.sub.3 0.1 0.1 0.1 0.1 0.1 Li.sub.2O 0.0 0.0 0.0 0.0 0.0 Na.sub.2O 1.0 0.0 0.0 0.0 0.0 K.sub.2O 8.3 9.9 9.9 9.9 9.9 MgO 0.0 0.0 0.0 0.0 0.0 CaO 1.3 1.2 1.2 1.2 1.2 SrO 0.0 0.0 0.0 0.0 0.0 BaO 0.0 0.0 0.0 0.0 0.0 TiO.sub.2 10.3 9.4 9.9 10.4 10.9 ZrO.sub.2 0.005 0.005 0.005 0.005 0.005 Fe.sub.2O.sub.3 Not Not Not Not Not measured measured measured measured measured SnO.sub.2 0.1 0.1 0.4 0.1 0.1 SO.sub.3 Not Not Not Not Not measured measured measured measured measured ZnO Not Not Not Not Not measured measured measured measured measured HfO.sub.2 Not Not Not Not Not measured measured measured measured measured P.sub.2O.sub.5 Not Not Not Not Not measured measured measured measured measured Y.sub.2O.sub.3 Not Not Not Not Not measured measured measured measured measured Glass F mol % 0.2 0.1 0.2 0.1 0.2 composition Cl 0.05 0.15 0.05 0.15 0.05 Li.sub.2O + Na.sub.2O + K.sub.2O 9.3 9.9 9.9 9.9 9.9 MgO + CaO + SrO + BaO 1.3 1.2 1.2 1.2 1.2 K.sub.2O/ZrO.sub.2 1660 1980 1980 1980 1980 TiO.sub.2/(Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + 1.0 0.8 0.9 0.9 1.0 CaO + SrO + BaO) (Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + CaO + 0.13 0.14 0.14 0.14 0.14 SrO + BaO)/SiO.sub.2 Hydrolytic resistance ISO 720(1985) mL/g Not Not Not Not Not (Hydrochloric acid measured measured measured measured measured consumption H) Class Not Not Not Not Not measured measured measured measured measured Acid resistance QC: ? eluted components mg/dm.sup.2 Not Not Not Not Not (Elution evaluation (cation mass) measured measured measured measured measured QC, QO) QO: ? eluted components mg/dm.sup.2 Not Not Not Not Not (oxide mass) measured measured measured measured measured Alkali resistance ISO 695(199605-15) mg/dm.sup.2 Not Not Not Not Not (loss in mass ?) measured measured measured measured measured Class Not Not Not Not Not measured measured measured measured measured Chemical resistance H ? 10 + QC ? 10 + ? Not Not Not Not Not factor value measured measured measured measured measured Liquidus temperature ? C. Not Not Not Not Not measured measured measured measured measured Thermal expansion 20 to 300? C. 10.sup.?7/? C. Not Not Not Not Not coefficient measured measured measured measured measured 30 to 300? C. Not Not Not Not Not measured measured measured measured measured 30 to 380? C. Not Not Not Not Not measured measured measured measured measured Viscosity 10.sup.2.5 dPa .Math. s ? C. Not Not Not Not Not characteristics measured measured measured measured measured 10.sup.3.0 dPa .Math. s Not Not Not Not Not measured measured measured measured measured 10.sup.4.0 dPa .Math. s Not Not Not Not Not measured measured measured measured measured Strain point Not Not Not Not Not measured measured measured measured measured Annealing point Not Not Not Not Not measured measured measured measured measured Softening point Not Not Not Not Not measured measured measured measured measured Average transmittance 400 to 800 nm % Not Not Not Not Not (thickness: 1 mm) measured measured measured measured measured Unit No. 76 No. 77 No. 78 No. 79 No. 80 Glass SiO.sub.2 mol % 79.0 78.4 79.0 78.5 78.5 composition B.sub.2O.sub.3 0.0 0.0 0.0 0.0 0.0 Al.sub.2O.sub.3 0.1 0.1 0.1 0.1 0.1 Li.sub.2O 0.0 0.0 0.0 0.0 0.0 Na.sub.2O 0.0 0.0 0.0 0.0 0.0 K.sub.2O 10.4 10.9 9.9 9.9 10.4 MgO 0.0 0.0 0.0 0.0 0.0 CaO 1.2 1.2 1.7 2.2 1.7 SrO 0.0 0.0 0.0 0.0 0.0 BaO 0.0 0.0 0.0 0.0 0.0 TiO.sub.2 8.9 8.9 8.9 8.9 8.9 ZrO.sub.2 0.005 0.005 0.005 0.005 0.005 Fe.sub.2O.sub.3 Not Not Not Not Not measured measured measured measured measured SnO.sub.2 0.1 0.2 0.1 0.1 0.1 SO.sub.3 Not Not Not Not Not measured measured measured measured measured ZnO Not Not Not Not Not measured measured measured measured measured HfO.sub.2 Not Not Not Not Not measured measured measured measured measured P.sub.2O.sub.5 Not Not Not Not Not measured measured measured measured measured Y.sub.2O.sub.3 Not Not Not Not Not measured measured measured measured measured Glass F mol % 0.1 0.2 0.1 0.2 0.1 composition Cl 0.15 0.05 0.15 0.05 0.15 Li.sub.2O + Na.sub.2O + K.sub.2O 10.4 10.9 9.9 9.9 10.4 MgO + CaO + SrO + BaO 1.2 1.2 1.7 2.2 1.7 K.sub.2O/ZrO.sub.2 2080 2180 1980 1980 2080 TiO.sub.2/(Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + 0.8 0.7 0.8 0.7 0.7 CaO + SrO + BaO) (Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + CaO + 0.15 0.15 0.15 0.15 0.15 SrO + BaO)/SiO.sub.2 Hydrolytic resistance ISO 720(1985) mL/g Not Not Not Not Not (Hydrochloric acid measured measured measured measured measured consumption H) Class Not Not Not Not Not measured measured measured measured measured Acid resistance QC: ? eluted components mg/dm.sup.2 Not Not Not Not Not (Elution evaluation (cation mass) measured measured measured measured measured QC, QO) QO: ? eluted components mg/dm.sup.2 Not Not Not Not Not (oxide mass) measured measured measured measured measured Alkali resistance ISO 695(199605-15) mg/dm.sup.2 Not Not Not Not Not (loss in mass ?) measured measured measured measured measured Class Not Not Not Not Not measured measured measured measured measured Chemical resistance H ? 10 + QC ? 10 + ? Not Not Not Not Not factor value measured measured measured measured measured Liquidus temperature ? C. Not Not Not Not Not measured measured measured measured measured Thermal expansion 20 to 300? C. 10.sup.?7/? C. Not Not Not Not Not coefficient measured measured measured measured measured 30 to 300? C. Not Not Not Not Not measured measured measured measured measured 30 to 380? C. Not Not Not Not Not measured measured measured measured measured Viscosity 10.sup.2.5 dPa .Math. s ? C. Not Not Not Not Not characteristics measured measured measured measured measured 10.sup.3.0 dPa .Math. s Not Not Not Not Not measured measured measured measured measured 10.sup.4.0 dPa .Math. s Not Not Not Not Not measured measured measured measured measured Strain point Not Not Not Not Not measured measured measured measured measured Annealing point Not Not Not Not Not measured measured measured measured measured Softening point Not Not Not Not Not measured measured measured measured measured Average transmittance 400 to 800 nm % Not Not Not Not Not (thickness: 1 mm) measured measured measured measured measured

TABLE-US-00009 TABLE 9 Unit No. 81 No. 82 No. 83 No. 84 No. 85 Glass SiO.sub.2 mol % 78.8 79.1 79.9 80.4 82.1 composition B.sub.2O.sub.3 0.0 0.0 0.0 0.0 0.0 Al.sub.2O.sub.3 0.0 0.0 0.0 0.0 0.0 Li.sub.2O 0.0 0.0 0.0 0.0 0.0 Na.sub.2O 0.0 0.0 0.0 0.0 0.0 K.sub.2O 9.3 9.0 8.7 8.7 7.5 MgO 0.0 0.0 0.0 0.0 0.0 CaO 1.0 1.0 1.0 1.0 1.0 SrO 0.0 0.0 0.0 0.0 0.0 BaO 0.0 0.0 0.0 0.0 0.0 TiO.sub.2 10.5 10.5 10.0 9.5 9.0 ZrO.sub.2 0.005 0.005 0.005 0.005 0.005 Fe.sub.2O.sub.3 Not Not Not Not Not measured measured measured measured measured SnO.sub.2 0.1 0.1 0.1 0.1 0.1 SO.sub.3 Not Not Not Not Not measured measured measured measured measured ZnO Not Not Not Not Not measured measured measured measured measured HfO.sub.2 Not Not Not Not Not measured measured measured measured measured P.sub.2O.sub.5 Not Not Not Not Not measured measured measured measured measured Y.sub.2O.sub.3 Not Not Not Not Not measured measured measured measured measured Glass F mol % 0.2 0.1 0.2 0.1 0.2 composition Cl 0.05 0.15 0.05 0.15 0.05 Li.sub.2O + Na.sub.2O + K.sub.2O 9.3 9.0 8.7 8.7 7.5 MgO + CaO + SrO + BaO 1.0 1.0 1.0 1.0 1.0 K.sub.2O/ZrO.sub.2 1860 1800 1740 1740 1500 TiO.sub.2/(Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + 1.0 1.1 1.0 1.0 1.1 CaO + SrO + BaO) (Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + CaO + 0.13 0.13 0.12 0.12 0.10 SrO + BaO)/SiO.sub.2 Hydrolytic resistance ISO 720(1985) mL/g Not Not Not Not Not (Hydrochloric acid measured measured measured measured measured consumption H) Class Not Not Not Not Not measured measured measured measured measured Acid resistance QC: ? eluted components mg/dm.sup.2 Not Not Not Not Not (Elution evaluation (cation mass) measured measured measured measured measured QC, QO) QO: ? eluted components mg/dm.sup.2 Not Not Not Not Not (oxide mass) measured measured measured measured measured Alkali resistance ISO 695(199605-15) mg/dm.sup.2 Not Not Not Not Not (loss in mass ?) measured measured measured measured measured Class Not Not Not Not Not measured measured measured measured measured Chemical resistance H ? 10 + QC ? 10 + ? Not Not Not Not Not factor value measured measured measured measured measured Liquidus temperature ? C. Not Not Not Not Not measured measured measured measured measured Thermal expansion 20 to 300? C. 10.sup.?7/? C. Not Not Not Not Not coefficient measured measured measured measured measured 30 to 300? C. Not Not Not Not Not measured measured measured measured measured 30 to 380? C. Not Not Not Not Not measured measured measured measured measured Viscosity 10.sup.2.5 dPa .Math. s ? C. Not Not Not Not Not characteristics measured measured measured measured measured 10.sup.3.0 dPa .Math. s Not Not Not Not Not measured measured measured measured measured 10.sup.4.0 dPa .Math. s Not Not Not Not Not measured measured measured measured measured Strain point Not Not Not Not Not measured measured measured measured measured Annealing point Not Not Not Not Not measured measured measured measured measured Softening point Not Not Not Not Not measured measured measured measured measured Average transmittance 400 to 800 nm % Not Not Not Not Not (thickness: 1 mm) measured measured measured measured measured Unit No. 86 No. 87 No. 88 No. 89 No. 90 Glass SiO.sub.2 mol % 79.1 79.9 80.4 80.9 79.1 composition B.sub.2O.sub.3 0.0 0.0 0.0 0.0 0.0 Al.sub.2O.sub.3 0.0 0.0 0.0 0.0 0.0 Li.sub.2O 0.0 0.0 0.0 0.0 0.0 Na.sub.2O 8.9 8.6 8.6 8.6 6.0 K.sub.2O 0.1 0.1 0.1 0.1 3.0 MgO 0.0 0.0 0.0 0.0 0.0 CaO 1.0 1.0 1.0 1.0 1.0 SrO 0.0 0.0 0.0 0.0 0.0 BaO 0.0 0.0 0.0 0.0 0.0 TiO.sub.2 10.5 10.0 9.5 9.0 10.5 ZrO.sub.2 0.005 0.005 0.005 0.005 0.005 Fe.sub.2O.sub.3 Not Not Not Not Not measured measured measured measured measured SnO.sub.2 0.1 0.1 0.1 0.1 0.1 SO.sub.3 Not Not Not Not Not measured measured measured measured measured ZnO Not Not Not Not Not measured measured measured measured measured HfO.sub.2 Not Not Not Not Not measured measured measured measured measured P.sub.2O.sub.5 Not Not Not Not Not measured measured measured measured measured Y.sub.2O.sub.3 Not Not Not Not Not measured measured measured measured measured Glass F mol % 0.1 0.2 0.1 0.2 0.1 composition Cl 0.15 0.05 0.15 0.05 0.15 Li.sub.2O + Na.sub.2O + K.sub.2O 9.0 8.7 8.7 8.7 9.0 MgO + CaO + SrO + BaO 1.0 1.0 1.0 1.0 1.0 K.sub.2O/ZrO.sub.2 20 20 20 20 600 TiO.sub.2/(Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + 1.1 1.0 1.0 0.9 1.1 CaO + SrO + BaO) (Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + CaO + 0.13 0.12 0.12 0.12 0.13 SrO + BaO)/SiO.sub.2 Hydrolytic resistance ISO 720(1985) mL/g Not Not Not Not Not (Hydrochloric acid measured measured measured measured measured consumption H) Class Not Not Not Not Not measured measured measured measured measured Acid resistance QC: ? eluted components mg/dm.sup.2 Not Not Not Not Not (Elution evaluation (cation mass) measured measured measured measured measured QC, QO) QO: ? eluted components mg/dm.sup.2 Not Not Not Not Not (oxide mass) measured measured measured measured measured Alkali resistance ISO 695(199605-15) mg/dm.sup.2 Not Not Not Not Not (loss in mass ?) measured measured measured measured measured Class Not Not Not Not Not measured measured measured measured measured Chemical resistance H ? 10 + QC ? 10 + ? Not Not Not Not Not factor value measured measured measured measured measured Liquidus temperature ? C. Not Not Not Not Not measured measured measured measured measured Thermal expansion 20 to 300? C. 10.sup.?7/? C. Not Not Not Not Not coefficient measured measured measured measured measured 30 to 300? C. Not Not Not Not Not measured measured measured measured measured 30 to 380? C. Not Not Not Not Not measured measured measured measured measured Viscosity 10.sup.2.5 dPa .Math. s ? C. Not Not Not Not Not characteristics measured measured measured measured measured 10.sup.3.0 dPa .Math. s Not Not Not Not Not measured measured measured measured measured 10.sup.4.0 dPa .Math. s Not Not Not Not Not measured measured measured measured measured Strain point Not Not Not Not Not measured measured measured measured measured Annealing point Not Not Not Not Not measured measured measured measured measured Softening point Not Not Not Not Not measured measured measured measured measured Average transmittance 400 to 800 nm % Not Not Not Not Not (thickness: 1 mm) measured measured measured measured measured

TABLE-US-00010 TABLE 10 Unit No. 91 No. 92 No. 93 No. 94 No. 95 Glass SiO.sub.2 mol % 79.6 79.8 79.6 78.9 79.9 composition B.sub.2O.sub.3 0.0 0.0 0.0 0.0 0.0 Al.sub.2O.sub.3 0.0 0.0 0.0 0.0 0.0 Li.sub.2O 0.0 0.0 0.0 0.0 0.0 Na.sub.2O 6.0 4.0 1.0 0.0 0.0 K.sub.2O 3.0 4.8 8.0 8.5 8.0 MgO 0.0 0.0 0.0 0.0 0.0 CaO 1.0 1.0 1.0 1.7 1.7 SrO 0.0 0.0 0.0 0.0 0.0 BaO 0.0 0.0 0.0 0.0 0.0 TiO.sub.2 10.0 10.0 10.0 10.5 10.0 ZrO.sub.2 0.005 0.005 0.005 0.005 0.005 Fe.sub.2O.sub.3 Not Not Not Not Not measured measured measured measured measured SnO.sub.2 0.1 0.1 0.1 0.1 0.1 SO.sub.3 Not Not Not Not Not measured measured measured measured measured ZnO Not Not Not Not Not measured measured measured measured measured HfO.sub.2 Not Not Not Not Not measured measured measured measured measured P.sub.2O.sub.5 Not Not Not Not Not measured measured measured measured measured Y.sub.2O.sub.3 Not Not Not Not Not measured measured measured measured measured Glass F mol % 0.2 0.1 0.2 0.1 0.2 composition Cl 0.05 0.15 0.05 0.15 0.05 Li.sub.2O + Na.sub.2O + K.sub.2O 9.0 8.8 9.0 8.5 8.0 MgO + CaO + SrO + BaO 1.0 1.0 1.0 1.7 1.7 K.sub.2O/ZrO.sub.2 600 960 1600 1700 1600 TiO.sub.2/(Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + 1.0 1.0 1.0 1.0 1.0 CaO + SrO + BaO) (Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + CaO + 0.13 0.12 0.13 0.13 0.12 SrO + BaO)/SiO.sub.2 Hydrolytic resistance ISO 720(1985) mL/g Not Not Not Not Not (Hydrochloric acid measured measured measured measured measured consumption H) Class Not Not Not Not Not measured measured measured measured measured Acid resistance QC: ? eluted components mg/dm.sup.2 Not Not Not Not Not (Elution evaluation (cation mass) measured measured measured measured measured QC, QO) QO: ? eluted components mg/dm.sup.2 Not Not Not Not Not (oxide mass) measured measured measured measured measured Alkali resistance ISO 695(199605-15) mg/dm.sup.2 Not Not Not Not Not (loss in mass ?) measured measured measured measured measured Class Not Not Not Not Not measured measured measured measured measured Chemical resistance H ? 10 + QC ? 10 + ? Not Not Not Not Not factor value measured measured measured measured measured Liquidus temperature ? C. Not Not Not Not Not measured measured measured measured measured Thermal expansion 20 to 300? C. 10.sup.?7/? C. Not Not Not Not Not coefficient measured measured measured measured measured 30 to 300? C. Not Not Not Not Not measured measured measured measured measured 30 to 380? C. Not Not Not Not Not measured measured measured measured measured Viscosity 10.sup.2.5 dPa .Math. s ? C. Not Not Not Not Not characteristics measured measured measured measured measured 10.sup.3.0 dPa .Math. s Not Not Not Not Not measured measured measured measured measured 10.sup.4.0 dPa .Math. s Not Not Not Not Not measured measured measured measured measured Strain point Not Not Not Not Not measured measured measured measured measured Annealing point Not Not Not Not Not measured measured measured measured measured Softening point Not Not Not Not Not measured measured measured measured measured Average 400 to 800 nm % Not Not Not Not Not transmittance measured measured measured measured measured (thickness: 1 mm) Unit No. 96 No. 97 No. 98 No. 99 No. 100 Glass SiO.sub.2 mol % 79.9 74.4 74.5 74.7 74.9 composition B.sub.2O.sub.3 0.0 0.5 0.3 0.2 0.1 Al.sub.2O.sub.3 0.0 0.5 0.4 0.3 0.2 Li.sub.2O 0.0 0.0 0.0 0.0 0.0 Na.sub.2O 1.5 0.0 0.0 0.0 0.0 K.sub.2O 6.0 9.9 10.0 10.0 10.0 MgO 0.0 0.0 0.0 0.0 0.0 CaO 2.2 1.2 1.2 1.2 1.3 SrO 0.0 0.0 0.0 0.0 0.0 BaO 0.0 0.0 0.0 0.0 0.0 TiO.sub.2 10.0 8.9 9.2 9.3 9.2 ZrO.sub.2 0.005 4.2 4.1 4.0 4.0 Fe.sub.2O.sub.3 Not Not Not Not Not measured measured measured measured measured SnO.sub.2 0.1 0.1 0.1 0.1 0.1 SO.sub.3 Not Not Not Not Not measured measured measured measured measured ZnO Not Not Not Not Not measured measured measured measured measured HfO.sub.2 Not Not Not Not Not measured measured measured measured measured P.sub.2O.sub.5 Not Not Not Not Not measured measured measured measured measured Y.sub.2O.sub.3 Not Not Not Not Not measured measured measured measured measured Glass F mol % 0.1 0.1 0.2 0.1 0.2 composition Cl 0.15 0.15 0.05 0.15 0.05 Li.sub.2O + Na.sub.2O + K.sub.2O 7.5 10.0 10.0 10.0 10.0 MgO + CaO + SrO + BaO 2.2 1.2 1.2 1.2 1.3 K.sub.2O/ZrO.sub.2 1200 2.3 2.4 2.5 2.5 TiO.sub.2/(Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + 1.0 0.8 0.8 0.8 0.8 CaO + SrO + BaO) (Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + CaO + 0.12 0.15 0.15 0.15 0.15 SrO + BaO)/SiO.sub.2 Hydrolytic resistance ISO 720(1985) mL/g Not Not Not Not Not (Hydrochloric acid measured measured measured measured measured consumption H) Class Not Not Not Not Not measured measured measured measured measured Acid resistance QC: ? eluted components mg/dm.sup.2 Not Not Not Not Not (Elution evaluation (cation mass) measured measured measured measured measured QC, QO) QO: ? eluted components mg/dm.sup.2 Not Not Not Not Not (oxide mass) measured measured measured measured measured Alkali resistance ISO 695(199605-15) mg/dm.sup.2 Not Not Not Not Not (loss in mass ?) measured measured measured measured measured Class Not Not Not Not Not measured measured measured measured measured Chemical resistance H ? 10 + QC ? 10 + ? Not Not Not Not Not factor value measured measured measured measured measured Liquidus temperature ? C. Not Not Not Not Not measured measured measured measured measured Thermal expansion 20 to 300? C. 10.sup.?7/? C. Not Not Not Not Not coefficient measured measured measured measured measured 30 to 300? C. Not Not Not Not Not measured measured measured measured measured 30 to 380? C. Not Not Not Not Not measured measured measured measured measured Viscosity 10.sup.2.5 dPa .Math. s ? C. Not Not Not Not Not characteristics measured measured measured measured measured 10.sup.3.0 dPa .Math. s Not Not Not Not Not measured measured measured measured measured 10.sup.4.0 dPa .Math. s Not Not Not Not Not measured measured measured measured measured Strain point Not Not Not Not Not measured measured measured measured measured Annealing point Not Not Not Not Not measured measured measured measured measured Softening point Not Not Not Not Not measured measured measured measured measured Average 400 to 800 nm % Not Not Not Not Not transmittance measured measured measured measured measured (thickness: 1 mm)

TABLE-US-00011 TABLE 11 Unit No. 101 No. 102 No. 103 No. 104 No. 105 No. 106 No. 107 Glass SiO.sub.2 mol % 75.0 75.0 73.3 79.0 79.4 73.9 73.9 composition B.sub.2O.sub.3 0.0 0.0 1.0 0.8 0.6 0.4 1.0 Al.sub.2O.sub.3 0.2 0.1 1.0 0.8 0.6 1.0 0.4 Li.sub.2O 0.0 0.0 0.0 0.0 0.0 3.0 5.0 Na.sub.2O 0.0 0.0 0.2 2.0 1.0 0.0 0.0 K.sub.2O 10.1 9.9 9.8 6.5 7.5 7.0 5.0 MgO 0.0 0.0 0.0 0.0 0.0 0.0 0.0 CaO 1.1 1.6 1.2 0.7 0.7 1.2 1.2 SrO 0.0 0.0 0.0 0.0 0.0 0.0 0.0 BaO 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TiO.sub.2 9.4 9.2 9.0 6.4 6.4 9.2 9.2 ZrO.sub.2 3.9 4.0 4.3 3.6 3.6 4.1 4.1 Fe.sub.2O.sub.3 Not Not Not Not Not Not Not measured measured measured measured measured measured measured SnO.sub.2 0.1 0.0 0.0 0.0 0.0 0.0 0.0 SO.sub.3 Not Not Not Not Not Not Not measured measured measured measured measured measured measured ZnO Not Not Not Not Not Not Not measured measured measured measured measured measured measured HfO.sub.2 Not Not Not Not Not Not Not measured measured measured measured measured measured measured P.sub.2O.sub.5 Not Not Not Not Not Not Not measured measured measured measured measured measured measured Y.sub.2O.sub.3 Not Not Not Not Not Not Not measured measured measured measured measured measured measured Glass F mol % 0.1 0.2 0.1 0.1 0.2 0.1 0.1 composition Cl 0.15 0.05 0.15 0.15 0.05 0.15 0.15 Li.sub.2O + Na.sub.2O + K.sub.2O 10.1 0.1 1.2 2.8 1.6 4.0 5.4 MgO + CaO + SrO + BaO 1.1 11.5 11.0 7.2 8.2 8.2 6.2 K.sub.2O/ZrO.sub.2 2.6 0 0.02 0.31 0.16 0 0 TiO.sub.2/(Li.sub.2O + Na.sub.2O + K.sub.2O + 0.8 0.0 0.0 0.0 0.0 0.0 0.0 MgO + CaO + SrO + BaO) (Li.sub.2O + Na.sub.2O + K.sub.2O + MgO + 0.15 0.15 0.17 0.13 0.12 0.17 0.16 CaO + SrO + BaO)/SiO.sub.2 Hydrolytic ISO 720(1985) mL/g Not Not Not Not Not Not Not resistance measured measured measured measured measured measured measured (Hydrochloric Class Not Not Not Not Not Not Not acid measured measured measured measured measured measured measured consumption H) Acid resistance QC: ? eluted components mg/dm.sup.2 Not Not Not Not Not Not Not (Elution (cation mass) measured measured measured measured measured measured measured evaluation QO: ? eluted components mg/dm.sup.2 Not Not Not Not Not Not Not QC, QO) (oxide mass) measured measured measured measured measured measured measured Alkali resistance ISO 695(199605-15) mg/dm.sup.2 Not Not Not Not Not Not Not (loss in mass ?) measured measured measured measured measured measured measured Class Not Not Not Not Not Not Not measured measured measured measured measured measured measured Chemical H ? 10 + QC ? 10 + ? Not Not Not Not Not Not Not resistance measured measured measured measured measured measured measured factor value Liquidus temperature ? C. Not Not Not Not Not Not Not measured measured measured measured measured measured measured Thermal 20 to 300? C. 10.sup.?7/? C. Not Not Not Not Not Not Not expansion measured measured measured measured measured measured measured coefficient 30 to 300? C. Not Not Not Not Not Not Not measured measured measured measured measured measured measured 30 to 380? C. Not Not Not Not Not Not Not measured measured measured measured measured measured measured Viscosity 10.sup.2.5 dPa .Math. s ? C. Not Not Not Not Not Not Not characteristics measured measured measured measured measured measured measured 10.sup.3.0 dPa .Math. s Not Not Not Not Not Not Not measured measured measured measured measured measured measured 10.sup.4.0 dPa .Math. s Not Not Not Not Not Not Not measured measured measured measured measured measured measured Strain point Not Not Not Not Not Not Not measured measured measured measured measured measured measured Annealing point Not Not Not Not Not Not Not measured measured measured measured measured measured measured Softening point Not Not Not Not Not Not Not measured measured measured measured measured measured measured Average 400 to 800 nm % Not Not Not Not Not Not Not transmittance measured measured measured measured measured measured measured (thickness: 1 mm)

Production of Evaluation Glass

[0085] Various glass raw materials (500 g of glass) were compounded and mixed in accordance with each glass composition, thus a batch of raw materials was prepared. The batch of raw materials was placed in a 300-cc platinum crucible, and melted in an electric furnace heated to 1600? C. The melting time was 20 hours, and the molten glass was stirred 1 hour after placing the whole batch of raw materials in the crucible, and stirred 4 hours before pouring the batch. After completion of the second stirring, the temperature of the electric furnace was raised to 1650? C., and fining was conducted. Thereafter, the molten glass was poured onto a carbon plate, and the resultant glass was formed into a sheet shape having a thickness of 5 mm while the glass was rapidly cooled using a metal roller or was formed into an ingot shape having a thickness of 15 mm. Then, samples were produced.

Measurement of Hydrochloric Acid Consumption H

[0086] The hydrochloric acid consumption of each of the samples was measured as follows. The surfaces of the samples were carefully wiped with ethanol, and the samples were ground with an alumina pestle in a mortar, and then classified using three stainless steel sieves with openings of 710 ?m, 425 ?m, and 300 ?m. The glass powder remaining on the 300 ?m sieve was collected, and the glass remaining on the 710 ?m and 425 ?m sieves was ground again. The same operation was repeated until the amount of the glass powder on the 300 ?m sieve reached 10 g or greater. The glass powder remaining on the 300 ?m sieve was transferred to a beaker, 30 mL of acetone was poured, and ultrasonic cleaning was performed for 1 minute. The supernatant liquid was discarded and the same operation was repeated five times. Thereafter, an operation of pouring 30 mL of acetone into a beaker and gently shaking the beaker with a hand to discard only the supernatant liquid was repeated three times. The mouth of the beaker was covered with an aluminum foil, a plurality of holes was made in the foil, and then the beaker was dried in an oven at 120? C. for 20 minutes. After that, the glass powder was taken out and cooled in a desiccator for 30 minutes. The resulting glass powder was weighed to 10 g?0.0005 g using an electronic balance and placed in a 250 mL quartz flask, and then 50 mL extra pure water was added thereto. A quartz flask filled with only 50 mL of extra pure water was also prepared as a blank. The mouth of the quartz flask was covered with a quartz container, the quartz flask was placed in an autoclave and held at 100? C. for 10 minutes, and then heat treatment was performed at 121? C. for 30 minutes. At this time, the temperature was raised from 100? C. to 121? C. at 1? C./min, and cooled from 121? C. to 100? C. at 0.5? C./min. The quartz flask was cooled down to 95? C. and taken out. The flask was allowed to stand on a tray containing extra pure water, and cooled for 30 minutes. After cooling, the eluate in the quartz flask was transferred to a conical beaker. 15 mL of extra pure water collected with a transfer pipette was poured into the flask, the flask was gently shaken, and only the supernatant liquid was poured into the conical beaker. The same operation was repeated twice. The blank was also subjected to the same operation to form an eluate. 0.05 mL of a methyl red solution was added dropwise to the eluate. 0.02 mol/L of hydrochloric acid was added dropwise to the eluate of the sample, and the hydrochloric acid consumption when the color of the eluate became the same as that of the blank was recorded. Then, the hydrochloric acid consumption H (mL/g) per 1 g of glass was calculated.

Measurement of Acid Resistance

[0087] The detailed experimental procedure of the acid resistance test is as follows. First, a sample having a total surface area of 25 to 30 cm.sup.2 and having all glass surfaces mirror-polished was prepared. As pretreatment, the sample was immersed in a solution prepared by mixing hydrofluoric acid (40 mass %) and hydrochloric acid (2 mol/L) at a volume ratio of 1:9, and stirred with a magnetic stirrer for 10 minutes. The sample was then taken out and the length of the sample was measured. Thereafter, ultrasonic cleaning in extra pure water for 1 minute was performed three times, and ultrasonic cleaning in ethanol for 1 minute was performed two times. The sample was then dried in an oven at 110? C. for 1 hour and cooled in a desiccator for 30 minutes. Subsequently, 65 mL of 6 mol/L hydrochloric acid was put in a 120 mL PTFE airtight container, the PTFE container was closed with a lid and placed in an oven set at 120? C., and preheated for 90 minutes. Thereafter, the Teflon container containing hydrochloric acid was taken out, the lid was removed, and the sample was immersed in the hydrochloric acid solution at high temperature. Then, the lid was closed, and the container was returned to the oven again. The sample was held at 120?2? C. for 6 hours. After 6 hours, the PTFE container was taken out from the oven, the lid was quickly removed, and the sample was taken out using tweezers made of resin. Then, the lid was closed, and the container was cooled to room temperature. The mass B (g) of the resulting hydrochloric acid was measured, and the concentration analysis values C.sub.n (?g/mL) in respective components in the eluate was analyzed by ICP emission spectrometry. The total cation mass QC (mg/dm.sup.2) of eluted components per unit area was calculated based on the total surface area Acm.sup.2 of the sample according to the following Equation 1. Further, the total oxide mass QO (mg/dm.sup.2) of eluted components per unit area was calculated by the following Equation 2, under the assumption that the eluted components are oxides.

Total cation mass of eluted components per unit area QC=B/10/A/d??Cn,[Equation 1]

where A refers to a total surface area (cm.sup.2) of the sample, B refers to a hydrochloric acid mass (g) resulted from the test, C.sub.n refers to concentration analysis values (?g/mL) of respective components in the solution, ?C.sub.n refers to the sum of the concentration analysis values (?g/mL) of respective components in the solution, d refers to a hydrochloric acid density (g/cm.sup.3) resulted from the test, ? refers to multiplication, and/refers to division.

Total oxide mass of eluted components per unit area QO=B/10/A/d??{Cn?E.sub.n/F.sub.n/M.sub.n},[Equation 2]

A refers to a total surface area (cm.sup.2) of the sample, B refers to a hydrochloric acid mass (g) resulted from the test, C.sub.n refers to concentration analysis values (?g/mL) of respective components in the solution, d refers to a hydrochloric acid density (g/cm.sup.3) resulted from the test, E.sub.n refers to an oxide formula weight of cations in the eluted components (in the case of Si, formula weight of SiO.sub.2), F.sub.n represents the eluted components as oxides and refers to a mol ratio of cation contents in the eluted components, when a substance amount of an oxide is 1 mol, (e.g., in the case of Si, SiO.sub.2: 1, in the case of K, K.sub.2O: 2), M.sub.n refers to an atomic weight of cations in the eluted components, ?{Cn?E.sub.n/F.sub.n/M.sub.n} refers to addition of a value resulted from multiplication of Cn by E.sub.n, and division by F.sub.n and by M.sub.n for each component, ? refers to multiplication, and / refers to division.

Measurement of Alkali Resistance

[0088] The alkali resistance was evaluated by a method in accordance with ISO 695 (1991). The detailed test procedure is as follows. First, a sample having a total surface area of 15 cm.sup.2 and having all glass surfaces mirror-polished was prepared. As pretreatment, the sample was immersed in a solution produced by mixing hydrofluoric acid (40 mass %) and hydrochloric acid (2 mol/L) at a volume ratio of 1:9, and stirred with a magnetic stirrer for 10 minutes. The sample was then taken out and the length of the sample was measured. Thereafter, ultrasonic cleaning in extra pure water for 1 minute was performed three times, and ultrasonic cleaning in ethanol for 1 minute was performed two times. The sample was then dried in an oven at 110? C. for 1 hour and cooled in a desiccator for 30 minutes. The mass m.sub.1 of the sample thus produced was measured up to an accuracy of ?0.1 mg and recorded. Subsequently, 800 mL of a solution prepared by mixing 1 mol/L of sodium hydroxide solution and 0.5 mol/L of sodium carbonate solution at a volume ratio of 1:1 was placed in a stainless steel container, and heated to boiling using an electric heater. The sample hung with a platinum wire was put in the container and held for 3 hours. To prevent a decrease in fluid volume during the test, the opening of a lid of the container was plugged up with a gasket and a cooling tube. Thereafter, the sample was taken out and immersed three times in a beaker containing 500 mL of 1 mol/L hydrochloric acid. Then, ultrasonic cleaning in extra pure water for 1 minute was performed three times, and ultrasonic cleaning in ethanol for 1 minute was performed two times. Further, the washed sample was dried in an oven at 110? C. for 1 hour and cooled in a desiccator for 30 minutes. The mass m.sub.2 of the sample thus treated was measured up to an accuracy of ?0.1 mg and recorded. Finally, the loss in mass ? (mg/dm.sup.2) per unit area was calculated based on the masses m.sub.1 (mg) and m.sub.2 (mg) of the sample before and after placing it into the boiling solution as well as the total surface area A (cm.sup.2) of the sample according to Equation 3.

loss in mass ? per unit area=100?(m.sub.1?m.sub.2)/A[Equation 3]

Method for Calculating Chemical Resistance Factor Value

[0089] The chemical resistance factor value was calculated by the following Equation 4 using the hydrochloric acid consumption H based on hydrolytic resistance in accordance with ISO 720, the total cation mass QC (mg/dm.sup.2) of eluted components per unit surface area in an elution test on an acidic solution, and the loss in mass ? per unit area in an alkali resistance test in accordance with ISO 695. In addition, as the acid resistance score in calculating the chemical resistance factor value, QC (mg/dm.sup.2) was used.

Chemical resistance factor value=H?10+QC?10+?[Equation 4]

Measurement of Liquidus Temperature

[0090] The measurement of the liquidus temperature is as follows. A platinum boat of about 120?20?10 mm was filled with a ground sample and was put into an electric furnace having a linear temperature gradient for 24 hours. Thereafter, a crystal precipitation site was identified by microscope observation, a temperature corresponding to the crystal precipitation site was calculated from a temperature gradient graph of the electric furnace, and this temperature was set as the liquidus temperature.

Measurement of Thermal Expansion Coefficient

[0091] A sample processed into a size of 20 mm?5 mm? was used, and the linear thermal expansion coefficient was evaluated based on the average linear thermal expansion coefficient measured in the temperature range shown in each table. The measurement was performed using a Dilatometer, manufactured by NETZSCH.

Measurement of Low-Temperature Viscosity

[0092] The strain point, annealing point, and softening point were measured by a fiber elongation method.

Measurement of Viscosity in High Temperature

[0093] The viscosity in high temperature was measured by a platinum sphere pull up method. A viscosity curve of the glass was determined from the viscosity in high temperature and the Vogel-Fulcher-Tammann equation, and temperatures corresponding to 10.sup.2.5 dPa.Math.s, 10.sup.3.0 dPa.Math.s, and 10.sup.4.0 dPa.Math.s were determined from this viscosity curve.

Measurement of Transmittance

[0094] Tube glasses having a thickness of 1 mm were processed into a strip shape, and the transmittance at 400 to 800 nm was measured using a spectrophotometer. The used measuring device was a spectrophotometer V-670 (equipped with an integrating sphere), manufactured by JASCO Corporation.

[0095] As can be seen from Tables 1 to 11, in Samples 1 to 14, 16 to 28, and 30 to 107, the glass composition was substantially free of B.sub.2O.sub.3 and Al.sub.2O.sub.3, and the chemical resistance factor value was small. Meanwhile, Sample Nos. 15 and 29 did not contain ZrO.sub.2 in the glass composition, and thus had low alkali resistance.

[0096] The FIG. 1s a graph in which a horizontal axis represents mol % of SiO.sub.2 in various types of glass, and a vertical axis represents a total cation mass QC (mg/dm.sup.2) of eluted components per unit area. As can be seen from the FIGURE, there was a correlation between the mol % of SiO.sub.2 and the QC, and when the mol % of SiO.sub.2 was large, the QC decreases and the acid resistance improves.

INDUSTRIAL APPLICABILITY

[0097] The tube glass and the alkali silicate glass of the present invention can be preferably used in primary packaging containers for pharmaceutical preparations, such as ampules, vials, prefilled syringes, and cartridges. Further, the tube glass and the alkali silicate glass can be used as a laboratory instrument such as a beaker or a flask. Furthermore, the tube glass and the alkali silicate glass can be used as an inner wall material of a corrosion-resistant piping in a chemical plant requiring corrosion resistance. Additionally, the alkali silicate glass according to an embodiment of the present invention can be used for various applications requiring alkali resistance besides the above applications.