Production of sodium sulfite

Details Production of sodium sulfite Production of sodium sulfite

1976-01-30

1977-01-18

Cooper, Jack

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

423242, 23302T, C01D 514

Patent

active

040039854

ABSTRACT:
Anhydrous sodium sulfite is made by a process involving introducing substantially anhydrous sodium carbonate concurrently with sulfur dioxide-containing gas into a saturated solution of sodium sulfite maintained at pH of between about 6.5 and about 7.6 at temperature above about 35.degree. C. to form a slurry of anhydrous sodium sulfite crystals, and withdrawing the crystals from the slurry. The process is initiated using a concentrated sodium sulfite solution containing less than about 3 ppm of dissolved iron.

REFERENCES:
patent: 1865754 (1932-07-01), Hand
patent: 1937944 (1933-12-01), Butler
patent: 2719075 (1955-09-01), Allen
patent: 2899273 (1959-08-01), Murphy
patent: 3216793 (1965-11-01), Spormann et al.
patent: 3305307 (1967-02-01), Spormann et al.
patent: 3622443 (1970-03-01), Galeano

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