Process for the manufacture of sodium metabisulfite

Details Process for the manufacture of sodium metabisulfite Process for the manufacture of sodium metabisulfite

1985-12-27

1989-07-04

Doll, John

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

423202, 423512A, 23295R, 23302R, 23302F, C01B 1762, C01D 514

Patent

active

048448800

ABSTRACT:
An improved process for the manufacture of sodium metabisulfite is provided. In this process, the chemical reaction forming sodium bisulfite solution is carried out separately from the crystallization of sodium metabisulfite. The crystallization step is carried out without chemical alteration and without pH adjustment.

REFERENCES:
patent: 1484818 (1924-02-01), Drewsen
patent: 2656249 (1953-10-01), Gray et al.
patent: 2862887 (1958-12-01), Boyer
patent: 3361524 (1968-01-01), Spormann et al.
patent: 3860695 (1975-01-01), Metzger et al.
patent: 3995015 (1976-11-01), Bean
patent: 4112061 (1978-09-01), Hoffmann et al.
Kirk et al., Encyclopedia of Chemical Technology, 3th edition, John Wiley and Sons, New York 1983, vol. 22, p. 152.

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