Method for preparing dithionite

Details Method for preparing dithionite Method for preparing dithionite

C - Chemistry, Metallurgy

01

B

C01B 17/66 (2006.01) D21C 9/10 (2006.01)

Patent

CA 2684688

The present invention relates to a method for preparing dithionite solution with a reaction wherein sodium bisulfite is reduced with sodium borohydride solution to obtain dithionite, wherein the rise of the pH of the solution is prevented by adjusting the pH with carbon dioxide.

La présente invention concerne un procédé de préparation d'une solution de dithionite avec une réaction consistant à réduire du bisulfite de sodium avec une solution de borohydrure de sodium pour obtenir du dithionite, caractérisé en ce qu'on empêche le pH de la solution de monter en ajustant celui-ci avec du dioxyde de carbone.

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