Provided are a mixed refrigerant that is non-flammable and capable of reducing the greenhouse effect, and the use thereof. The mixed refrigerant comprises the following components in mass fractions: 10%-30% of R134a, 5%-70% of R1234ze(E), and 18%-65% of R1234yf. The mixed refrigerant of the present invention, in fitting combination with the amount ranges of all the components, makes the refrigerant non-flammable, and the ODP thereof is 0, and the GWP thereof is no greater than 400. The mixed refrigerant can be used in a refrigeration system, has no ozone destructive power, reduces the greenhouse effect, has a lower temperature glide, and belongs to ternary azeotropic or nearly azeotropic refrigerants, which is beneficial to the stable operation of a refrigeration system. The mixed refrigerant of the present invention can also serve as a foaming agent or aerosol propellant, and has the advantages of being non-flammable, having a low ozone destruction index, and being environmentally friendly and safe and reliable.

Refrigerant compositions including 2,3,3,3-tetrafluoropropene (HFO-1234yf) and at least one of ethane (R-170) or propane (R-290) which exhibit near-azeotropic or azeotrope-like behavior. The refrigerant compositions exhibit a low global warming potential (GWP) and are non-ozone depleting. The refrigerant compositions are useful as a heating or cooling fluids in a variety of heating or cooling systems including heat pumps and other heating and cooling loops, in, for example, the automotive industry.

The present invention provides azeotropic and azeotrope-like compositions comprising E-1,1,1,4,4,4-hexafluorobut-2-ene with either ethanol or isopropanol that may be useful, for example, in heat transfer applications. Methods of using the compositions in refrigeration and heat transfer applications are also provided.

The invention provides a novel composition comprising cis-1,2-difluoroethylene. The invention provides the following: a composition comprising cis-1,2-difluoroethylene (HFO-1132(Z)) and at least one additional compound; the composition that is an azeotropic or azeotrope-like composition; and use of the composition as a heat transfer medium, a foaming agent, or a propellant.

Heterogeneous azeotrope or azeotrope-like compositions comprising trifluoroiodomethane (CF.sub.3I) and water which may include from about 47.7 wt. % to about 99.0 wt. % trifluoroiodomethane (CF.sub.3I) and from about 1.0 wt. % to about 52.3 wt. % water and having a boiling point between about 18.0° C. and about 19.0° C. at a pressure of between about 58.0 psia and about 60.0 psia. The azeotrope or azeotrope-like compositions may be used to separate impurities from trifluoroiodomethane (CF.sub.3I).

The present disclosure provides azeotrope or azeotrope-like compositions including trifluoroiodomethane (CF.sub.3I) and trifluoroacetyl chloride (CF.sub.3COCl), and a method of forming an azeotrope or azeotrope-like composition comprising the step of combining trifluoroacetyl chloride (CF.sub.3COCl) and trifluoroiodomethane (CF.sub.3I) to form an azeotrope or azeotrope-like composition.

The disclosure provides a novel composition comprising trans-1,2-difluoroethylene. The disclosure provides the following: a composition comprising trans-1,2-difluoroethylene (HFO-1132(E)) and at least one additional compound; the composition that is an azeotropic or azeotrope-like composition; and use of the composition as a heat transfer medium, a foaming agent, or a propellant.

Disclosed is an environmentally friendly near-azeotropic mixed refrigerant, consisting essentially of HFO-1234 yf, HFE-143a and a third component, with the mass percentage of each component being: 70%-98% of HFO-1234yf, 1%-15% of HFE-143a and 1%-15% of the third component. The refrigerant of the present invention is environmentally friendly, excellent in thermodynamic properties, can directly realize drop-in substitution in an original system using HFC-134a without changing any parts, and can be used as a long term alternative to HFC-134a.

The present invention provides azeotropic or azeotrope-like compositions comprising 1234yf and at least one component selected from a group comprising of R-134, and R-134a. The compositions of the present invention are useful as refrigerants, heat transfer fluids, foam blowing agents, aerosol propellants, and fire suppression and fire extinguishing agents.

A fluoropropene composition comprising Z-1,3,3,3-tetrafluoropropene, E-1,3,3,3-tetrafluoropropene, 2,3,3,3-tetrafluoropropene, and optionally 1,1,1,3,3-pentafluoropropane wherein the 2,3,3,3-tetrafluoropropene being present in an amount of 0.001 to 1.0%. A method of producing the fluoropropene, methods for using the fluoropropene and the composition formed are also disclosed.