Mercaptoalcohol corrosion inhibitors

A corrosion-inhibited fluid comprising:

• a corrosion inhibitor composition comprising:
• from about 0.1 to about 70 wt. %, based on the total corrosion inhibiting composition, of a water soluble mercaptoalcohol having the formula:
• where R′ and R″ are independently selected from the group consisting of H, straight, branched, cyclic or heterocyclic, alkyl, aryl, alkylaryl and arylalkyl,
• where the heteroatom in the heterocyclic moiety is selected from the group consisting of N, O, S and P, and
• where the total number of carbon atoms in the mercaptoalcohol is from 1 to 8;
• and
• a solvent selected from the group consisting of water, alcohols, and aromatic compounds;
• and
• a hydrocarbon in contact with an iron-based alloy.

A corrosion-inhibited fluid comprising

• a corrosion inhibitor composition comprising
• a water soluble mercaptoalcohol selected from the group consisting of mercaptoalcohols having the formula:
• (HS)n—R—(OH)m
• where
• R is a straight, branched, cyclic or heterocyclic alkylene, hydrocarbon moiety having from 1 to 30 carbon atoms;
• n is from 1 to 3;
• m is 1;
• and
• the heteroatom in the heterocyclic moiety substituent is selected from the group consisting of N, O, S and P and
• having the formula:
• where R′ and R″ are independently selected from the group consisting of H, straight, branched, cyclic or heterocyclic, alkyl, aryl, alkylaryl and arylalkyl where the heteroatom in the heterocyclic moiety is selected from the group consisting of N, O, S and P, and where the total number of carbon atoms in the mercaptoalcohol is from 1 to 8;
• and
• at least one additional corrosion inhibitor selected from a group of corrosion inhibitors consisting of imidazolines, amides, amines, quaternary amines, phosphate esters, polycarboxylic acids, and mixtures thereof
• a hydrocarbon in contact with an iron-based alloy.