Sodium metabisulfite process

Details Sodium metabisulfite process Sodium metabisulfite process

1996-10-07

1998-05-19

Straub, Gary P.

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

423517, 423184, C01D 514

Patent

active

057532001

ABSTRACT:
Sulfur dioxide is introduced into a solution of sodium sulfite and sodium bisulfite to form sodium bisulfite in a solution having dissolved sulfur dioxide present with a pH between 3.5 and 4.2. The solution is drawn to a cooling crystallizer where sodium hydroxide is added to produce additional sodium metabisulfite that increases the yield of sodium metabisulfite crystallizing per pass. The mother liquor is recycled.

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Society, Lib. Congress Catalog Card A59-3563.

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