White or slightly yellow crystalline powder. Relative density 1.4, soluble in water (54g/100ml water at 20 ℃); The aqueous solution (81.7g/100ml water at 100 ℃) is acidic, soluble in glycerol and slightly soluble in ethanol.
Mainly used as a mineral processing agent in mines, chemical and pharmaceutical industries. Used in industry for printing and dyeing, organic synthesis, printing, leather making, pharmaceuticals, etc; Used as preservatives, bleaching agents, and loosening agents in food processing.
Sodium metabisulfite ≥ 95%
Water insoluble matter ≤ 0.05%
Iron ≤ 0.01%
CAS login number/CAS: 7681-57-4
Water insoluble matter ≤ 0.05%
Iron ≤ 0.01%
CAS login number/CAS: 7681-57-4