Multipurpose scale preventer/remover

Details Multipurpose scale preventer/remover Multipurpose scale preventer/remover

1991-07-22

1993-02-02

Hruskoci, Peter

Liquid purification or separation

Processes

Preventing, decreasing, or delaying precipitation,...

210698, 210699, 134 3, 252 82, 252180, 252181, 422 16, C02F 512

Patent

active

051835738

ABSTRACT:
A process for preventing or removing calcium and rust scale deposits from surfaces which are in contact with aqueous systems comprising adding to the aqueous system 3,5-bis(di-N,N-(carboxymethyl)aminomethyl)-4-hydroxybenzenesulfonic acid in an amount effective to remove the scale and rust deposits.

REFERENCES:
patent: 3527609 (1970-09-01), Vinso
patent: 3549538 (1970-12-01), Jacklin
patent: 3975281 (1976-08-01), Tate et al.
patent: 4221674 (1980-09-01), Vander Mey
patent: 4604233 (1986-08-01), Rootsaert et al.
patent: 4721532 (1988-01-01), Kuhn et al.
patent: 4734203 (1988-03-01), Lin et al.
Schweizerische Chemische Gesellschaft, "Der Phenolatsauerstoff als Koordinationspartner", Schwarzenbach et al.
J. Am. Chem. Soc. "Iron-Oxo Aggregates, Crystal Structures and Solution Characterization of 2-Hydroxy-1,3-xylylenediaminetetraacetic Acid Complexes", Murch et al. (1987).

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