Patent ID: 7611588

Claim:
A method for removing a metal oxide soil from a surface of processing equipment in the dairy, food and beverage, pharmaceutical, or cosmetic industries where the metal oxide soil is from a metal oxide additive, the method comprising: a) applying a use composition to the surface containing the metal oxide soil in a clean-in-place process, the use composition comprising: i) a pH adjuster in an amount sufficient to provide the use composition with a pH at or below 7; ii) an anionic surfactant comprising an alkyl alkoxylate phosphate ester, wherein the anionic surfactant is present in an amount sufficient to remove at least about 10% of a metal oxide soil from the surface when the use composition is allowed to contact the surface for at least about 15 minutes at 80° C.; and iii) a carrier; b) removing the metal oxide soil from the surface with the use composition; and c) rinsing the surface to remove the use composition and metal oxide soil.