Patent ID: 6521028
Filing Date: 2003-02-18
Classification: C07D,C23F,C23G

Abstract:
A low hazard corrosion inhibitor used to inhibit corrosion of steel in organic acids, chelating agents and sulfuric acid, comprising:about 20-50 percent-by-weight of a mixture of a reaction product and a solvent, said solvent selected from the group consisting of propylene glycols, propylene glycol ethers and mixtures thereof wherein said reaction product is formed in said solvent by contacting a tertiary ammonium compound with a second compound having the formula RX where R is aliphatic, substituted aliphatic or alkyl aryl and X is a monovalent anion; about 1-10 percent-by-weight of a sulphur-containing compound; about 0-10 percent-by-weight of a nonionic surfactant; and the balance selected from the group consisting of said solvent, water and mixtures thereof.