Composition for rust removal and method of use thereof

Details Composition for rust removal and method of use thereof Composition for rust removal and method of use thereof

1987-11-20

1989-05-09

Wax, Robert A.

Compositions

Dust suppressants for bulk materials, or processes of...

134 3, 134 41, 252 80, 252 81, 252142, C23F 400, C23F 300

Patent

active

048287431

ABSTRACT:
A non-phosphate cleaning composition, having enhanced rust removal properties at ambient temperatures, comprising oxalic acid and an activating amount of ferrous ion. This formulation removes rust better than formulations not containing the activating amount of ferrous ion.

REFERENCES:
patent: 2176389 (1939-10-01), Brandt
patent: 2973191 (1971-05-01), Streicher
patent: 3072502 (1963-01-01), Alfano
patent: 3173875 (1965-03-01), Wegst et al.
patent: 3248269 (1966-01-01), Bell
patent: 3794523 (1974-02-01), Thompson
patent: 4032466 (1977-06-01), Otrhalek et al.
patent: 4276185 (1981-06-01), Martin
patent: 4541945 (1985-09-01), Anderson et al.
patent: 4623399 (1986-11-01), Frenier
Data Sheet 672, "Chemical Cleaning with Citric Acid Solutions", Pfizer Chemicals Division (1981).

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