Patent ID: 8105531

Claim:
A method for inhibiting corrosion of a surface contacted by a hypochlorite source comprising: adding a corrosion inhibitor to a hypochlorite source to form a corrosion inhibitor use solution, wherein said corrosion inhibitor concentration in said use solution is from about 25 ppm to about 3000 ppm, wherein said corrosion inhibitor comprises a water soluble, non-thickening polymeric salt having a molecular weight less than about 10,000 and water soluble calcium salt which is other than said water soluble, non-thickening polymeric salt, wherein said corrosion inhibitor is free of magnesium salt and wherein said hypochlorite source to corrosion inhibitor ratio is from about 10:1 to about 600:1; and contacting a surface with said corrosion inhibitor use solution, wherein said composition inhibits the corrosion of said surface in the presence of said hypochlorite source.