Method and composition for removing sulfide- containing...

Details Method and composition for removing sulfide- containing... Method and composition for removing sulfide- containing...

C - Chemistry, Metallurgy

23

G

149/12

C23G 1/02 (2006.01)

Patent

CA 1158965

ABSTRACT OF THE DISCLOSURE The method of chemically cleaning acid- -soluble, sulfide-containing scale from a metal surface using an aqueous cleaning composition comprising an aqueous non-oxidizing acid having one or more aldehydes dissolved or dispersed therein is improved by generating the aldehyde in situ. An aqueous acid cleaning composition comprising hydrochloric or sulfuric acid and hexamethylene tetramine is a preferred composition. 28,705-F

390598

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