COMPOSITION AND METHOD FOR INHIBITING CORROSION OF METALS
A composition for inhibiting corrosion of a metal is provided. The corrosion inhibitor composition comprises 5-amino-2-mercaptobenzimidazole. The corrosion inhibitor composition outperforms many other sulfur-containing corrosion inhibitors in kettle testing.
1 . A method of inhibiting corrosion of a metal, the method comprising contacting the metal with a corrosion inhibitor composition comprising an effective amount of 5-amino-2-mercaptobenzimidazole, wherein the metal comprises iron.
2 . (canceled)
3 . The method of claim 1 , wherein the corrosion inhibitor composition is contacted with the metal in an environment where the metal would otherwise be corrodible therein.
4 . The method of claim 3 , wherein the environment is brine, a water-containing hydrocarbon, a water-containing gas, or a combination thereof.
5 . The method of claim 4 , wherein the corrosion inhibitor composition is introduced into the environment in an amount in the range from about 1 to about 1000 parts per million by volume.
6 . The method of claim 4 , wherein the corrosion inhibitor composition is introduced into the environment in an amount of about 1000 parts per million by volume or less.
7 .- 12 . (canceled)
13 . A composition for inhibiting corrosion of a metal in an environment in which the metal would otherwise be corrodible, the composition comprising 5-amino-2-mercaptobenzimidazole, wherein the metal comprises iron.
14 . (canceled)
15 . The method of claim 1 , wherein the metal comprises an iron alloy.
16 . The method of claim 3 , wherein the environment comprises one or more of CO 2 and H 2 S.
17 . The composition of claim 13 , wherein the metal comprises an iron alloy.
18 . The composition of claim 13 , wherein the environment comprises one or more of CO 2 and H 2 S.