Patent ID: 7018965

Claim:
A gas turbine cleaning composition comprising a mixture of (a) a glycol alkyl ether compound, (b) an alkoxylated surfactant with an alkyl chain length of from about 3 to 18 carbons and (c) a metal corrosion inhibitor component, wherein the mixture has an alkaline metal content less than about 25 ppm, said metal corrosion inhibitor component selected from the group consisting of N-methyloleamidoacetic acid, 1,8-octanedicarboxylic acid, (((2-hydroxyethyl) imino) bis-(methylene)) bis-phosphonic acid N-oxide, ((tetrahydro-2-hydroxy-4H-1,4,2-oxaphosphorin-4-yl)methyl) phosphonic acid N-oxide, and mixtures thereof with triethanolamine.