A cleaning composition for removing cement-based residues from tiles, such as cementitious grout used for installing flooring and for filling the joints is presented. The composition includes: sulfamic acid, a glycol solvent, and water.

A plastic cleaning method for cleaning a plastic article in an automatic dishwashing machine is provided, comprising: selecting an automatic dishwashing composition for cleaning plastic, wherein the automatic dishwashing composition, comprises: a builder; a phosphonate a nonionic surfactant; and a dispersant polymer comprising: (a) 60 to 98 wt % of structural units of formula I ##STR00001##
wherein each R.sup.1 is independently selected from a hydrogen and a CH.sub.3 group; and (b) 2 to 40 wt % of structural units of formula II ##STR00002##
wherein each R.sup.2 is independently selected from an alkyl group with at least 4 carbon atoms and wherein each R.sup.3 is independently selected from a hydrogen and a methyl group.

The present invention provides for the use of activator complexes to enhance lower temperature cleaning in alkaline peroxide cleaning systems. Compositions including at least one of an activator complex, an active oxygen source, and a source of alkalinity are applied to the surface to be cleaned at temperatures between about 5 C. and about 50 C. The methods and compositions of the present invention provide for enhanced soil removal with reduced energy, water, and chemistry consumption.

An oxygen-based cleaning composition, comprises a cleaning formulation in powder form, wherein the cleaning formulation includes a hydrogen peroxide addition compound layer comprising a hydrogen peroxide addition compound powder for producing hydrogen peroxide, a surfactant layer formed by coating an outer surface of the hydrogen peroxide addition compound layer with a liquid surfactant, and a saponin layer formed by coating an outer surface of the surfactant layer with a saponin powder.

An oxygen-based cleaning composition, comprises a cleaning formulation in powder form, wherein the cleaning formulation includes a hydrogen peroxide addition compound layer comprising a hydrogen peroxide addition compound powder for producing hydrogen peroxide, a surfactant layer formed by coating an outer surface of the hydrogen peroxide addition compound layer with a liquid surfactant, and a saponin layer formed by coating an outer surface of the surfactant layer with a saponin powder.

The disclosed invention relates to a two-part liquid composition for cleaning and disinfecting a substrate, comprising: (A) a disinfectant medium comprising peracetic acid; and (B) a supplemental medium comprising a non-enzymatic cleaner, a corrosion inhibitor, and a chelator. The supplemental medium (B) may further comprise an enzymatic cleaner, a surfactant, a buffer, a pH modifier, or a mixture of two or more thereof. The substrate may be a medical device, for example, an endoscope.

A method of creating a protective coating on an alkali metal hydroxide-containing solid is provided. The method includes providing carbon dioxide to an alkali metal hydroxide-containing solid and allowing the alkali metal hydroxide and carbon dioxide to react thereby forming a carbonate or bicarbonate-containing layer on the exterior of the solid wherein the carbonate or bicarbonate-containing layer is non-hygroscopic and water soluble, and wherein greater than 80% of the hydroxide in the hydroxide-containing solid does not react with the carbon dioxide, and further wherein the alkali metal hydroxide-containing solid is substantially free of lithium hydroxide. A method of testing for the presence of carbonate-containing coating on an alkali metal hydroxide containing solid is also provided. The method includes exposing the coated solid to 95 weight percent ethanol, collecting the ethanol effluent and testing the effluent for alkali metal hydroxide. A suitably coated solid does not have dissolved alkali metal hydroxide in the ethanol effluent or is substantially free of alkali metal hydroxide.

A method of creating a protective coating on an alkali metal hydroxide-containing solid is provided. The method includes providing carbon dioxide to an alkali metal hydroxide-containing solid and allowing the alkali metal hydroxide and carbon dioxide to react thereby forming a carbonate or bicarbonate-containing layer on the exterior of the solid wherein the carbonate or bicarbonate-containing layer is non-hygroscopic and water soluble, and wherein greater than 80% of the hydroxide in the hydroxide-containing solid does not react with the carbon dioxide, and further wherein the alkali metal hydroxide-containing solid is substantially free of lithium hydroxide. A method of testing for the presence of carbonate-containing coating on an alkali metal hydroxide containing solid is also provided. The method includes exposing the coated solid to 95 weight percent ethanol, collecting the ethanol effluent and testing the effluent for alkali metal hydroxide. A suitably coated solid does not have dissolved alkali metal hydroxide in the ethanol effluent or is substantially free of alkali metal hydroxide.

The composition for cleaning disarticulated skeletons is a mixture of ammonia, hydrogen peroxide and water. The composition may further include ozone continuously pumped into the mixture while soaking the skeleton. The skeleton may initially be soaked in a composition having 7% ammonia by volume and 8-10% hydrogen peroxide by volume, the balance being water, e.g., for a period of ten days. The composition may be maintained at 20 C. and ozone may be continuously pumped during the ten-day period. If any grease remains, the bones may be soaked again, e.g., in a composition having 3% ammonia and 3% hydrogen peroxide for an additional seven days, again with continuous pumping of ozone at a rate of 200 mg/hr into the mixture, followed by rinsing with water and drying.

A modified aqueous acid composition comprising: nitric acid; sulfuric acid; a compound comprising an amine moiety and a sulfonic acid moiety; and a peroxide. Also disclosed are methods of using such composition.