Alkylsulfonic acid compositions
Method of minimizing pitting corrosion at temperatures above 130° C., wherein said method comprises: providing an acidic fluid comprising an alkylsulfonic acid; providing at least one corrosion inhibitor compound comprising an organic compound comprising at least two aldehyde functional groups; combining said acidic fluid with said at least one corrosion inhibitor compound; exposing said mixed fluid to a metallic surface at a temperature of at least 130° C.; and allowing said mixed fluid sufficient time of exposure to a metal to accomplish a pre-determined function.
1. An alkylsulfonic acid composition comprising an alkylsulfonic acid and a corrosion inhibitor composition, said corrosion inhibitor composition comprising:
an organic compound comprising at least two aldehyde functional groups;
optionally, a propargyl alcohol;
an anionic surfactant which is a dicarboxylic surfactant;
at least one amphoteric surfactant; and
a solvent;
wherein the alkylsulfonic acid is present in an amount ranging from 1 wt % to 50 wt % of the sulfonic acid composition in water.
2. The alkylsulfonic acid composition as claimed in claim 1 , wherein the alkylsulfonic acid is methanesulfonic acid.
3. The alkylsulfonic acid composition as claimed in claim 1 , wherein the at least one amphoteric surfactant is selected from the group consisting of:
a sultaine surfactant; a betaine surfactant; and combinations thereof.
4. The alkylsulfonic acid composition as claimed in claim 1 , wherein at least one amphoteric surfactant is a sultaine surfactant and betaine surfactant and are selected from the group consisting of: an amido betaine surfactant; an amido sultaine surfactant; and combinations thereof.
5. The alkylsulfonic acid composition as claimed in claim 1 , wherein the at least one amphoteric surfactant is an amido betaine surfactant and is selected from the group consisting of: an amido betaine comprising a hydrophobic tail from C8 to C16.
6. The alkylsulfonic acid composition as claimed in claim 1 , wherein the at least one amphoteric surfactant is cocamidobetaine.
7. The alkylsulfonic acid composition as claimed in claim 1 , further comprising an anionic surfactant which is a carboxylic surfactant.
8. The alkylsulfonic acid composition as claimed in claim 1 , wherein said anionic surfactant is a dicarboxylic surfactant comprising a hydrophobic tail ranging from C8 to C16.
9. The alkylsulfonic acid composition as claimed in claim 1 , wherein said anionic surfactant is an iminodicarboxylate including sodium lauriminodipropionate.
10. The alkylsulfonic acid composition as claimed in claim 1 , wherein the surfactant is selected from the group consisting of:
cocamidopropyl betaine;
β-Alanine, N-(2-carboxyethyl)-N-dodecyl-, sodium salt (1:1); and
a combination thereof.
11. The alkylsulfonic acid composition as claimed in claim 1 , wherein the propargyl alcohol is present in an amount ranging from 20% to 55% by volume of the total weight of the corrosion inhibitor composition.
12. The alkylsulfonic acid composition as claimed in claim 1 , wherein the surfactant is present in an amount ranging from 2% to 20% by volume of the total weight of the corrosion inhibitor composition.
13. The alkylsulfonic acid composition as claimed in claim 1 , wherein the solvent is present in an amount ranging from 10% to 45% by volume of the total weight of the corrosion inhibitor composition.