Method for preparing dithionite

Chemistry of inorganic compounds – Sulfur or compound thereof – Oxygen containing

Reexamination Certificate

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Reexamination Certificate

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07993622

ABSTRACT:
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.

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