Stabilized solutions of sodium dithionite

Details Stabilized solutions of sodium dithionite Stabilized solutions of sodium dithionite

1976-10-26

1978-07-11

Padgett, Benjamin R.

Compositions

Reductive bleachant, deoxidant, reductant, or generative

Sulfur containing reductant, bleachant, deoxidant, or...

423265, 423515, C09K 300

Patent

active

041000986

ABSTRACT:
Aqueous solutions containing mixtures of sodium dithionite and sodium sulfite having concentrations of greater than 13 percent by weight of Na.sub.2 S.sub.2 O.sub.4 are stabilized by adding potassium hydroxide in an amount which is sufficient to provide a residual of from about 1 to about 12 grams per liter of solution. These solutions can be stored at temperatures of from about 0.degree. to about 15.degree. C. without crystallization taking place.

REFERENCES:
patent: 3669895 (1972-06-01), Shastri
patent: 3773679 (1973-11-01), Kise et al.
patent: 3804944 (1974-04-01), Kise et al.

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