Method for producing dust-free sodium dithionite

Details Method for producing dust-free sodium dithionite Method for producing dust-free sodium dithionite

C - Chemistry, Metallurgy

01

D

23/100

C01D 5/00 (2006.01) C01B 17/66 (2006.01) C01D 5/14 (2006.01)

Patent

CA 2019041

ABSTRACT OF THE DISCLOSURE There is disclosed a method for the production of dust-free sodium dithionite from the reaction of a alkaline formate sulfur dioxide and an alkaline metal agent in the presence of a thiosulfate reactive compound by introducing a water-soluble Polymer having a molecular weight less than 60,000 and delaying the start of the alkaline metal agent until the sodium formate and the sulfur dioxide have begun to be introduced into the reactor.

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