Method for removing iron sulfide scale from metal surfaces

Details Method for removing iron sulfide scale from metal surfaces Method for removing iron sulfide scale from metal surfaces

1981-05-22

1982-09-28

Caroff, Marc L.

Cleaning and liquid contact with solids

Processes

For metallic, siliceous, or calcareous basework, including...

134 41, 252142, 252146, C23G 108

Patent

active

043516734

ABSTRACT:
A method of removing ferrous sulfide from ferrous metal surfaces comprising contacting the ferrous sulfide with an aqueous composition comprising an acid selected from the group consisting of maleic acid, maleic anhydride, and the alkali metal and ammonium salts of maleic acid.

REFERENCES:
patent: 1873083 (1932-08-01), Walker
patent: 3399230 (1968-08-01), Campbell
patent: 3794523 (1974-02-01), Thompson
patent: 4147647 (1979-04-01), Rybacki
patent: 4220550 (1980-09-01), Frenier et al.
patent: 4276185 (1981-06-01), Martin
patent: 4289639 (1981-09-01), Buske

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