Rust removal and composition therefor

Details Rust removal and composition therefor Rust removal and composition therefor

C - Chemistry, Metallurgy

23

F

149/15

C23F 1/28 (2006.01) C23G 1/26 (2006.01)

Patent

CA 1311670

Abstract of the Disclosure Iron oxide deposits are removed from substrates by use of aqueous solution at approximately neutral pH containing a phosphonate (e.g., hydroxyethylidene diphosphonic acid), a reducing agent (e.g., sodium sulfite), and a corrosion inhibitor (e.g., benzotriazole). Optionally, a surfactant and dispersant may be included.

580736

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