Method for inhibiting corrosion in cooling systems and compositi

Details Method for inhibiting corrosion in cooling systems and compositi Method for inhibiting corrosion in cooling systems and compositi

1989-10-26

1991-02-12

Stoll, Robert L.

Compositions

Preservative agents

Anti-corrosion

25238962, C23F 1108

Patent

active

049922092

ABSTRACT:
The method of adding to a nitrite corrosion inhibitor composition an effective amount of a bromosulfamate which is stable with respect to the nitrite corrosion inhibitor and provides an effective biocide, bactericide and fungicide. The composition using this bromosulfamate component to nitrite is utilized at about 0.1 to 10 ppm (residual) with an optimum of about 0.2 ppm of bromosulfamate. The bromosulfamate composition comprises reacting together sodium bromide (NaBr), sodium hypochlorite (NaOCl) or chlorine, and sodium sulfamate (NaSO.sub.3 NH.sub.2) or sulfamic acid, and using the product "fresh" in treating the nitrite solution.

REFERENCES:
patent: 4476930 (1984-10-01), Watanabe
patent: 4642194 (1987-02-01), Johnson
patent: 4711724 (1987-12-01), Johnson
patent: 4759852 (1988-07-01), Trulear

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