Sodium Pyrosulfite

Molecular formula：Na₂S₂O₅
Molecular weight：190.107
CAS No：7681-57-4
Properties：White or yellow crystals with a strong pungent odor. Dissolved in water, the aqueous solution is acidic..
Application：Used for the production of insurance powder, sulfamethoxazole, metamizole, caprolactam, etc; Used for the purification of chloroform, phenylpropanol sulfone, and benzaldehyde. Ingredients used as fixing agents in the photographic industry; The spice industry is used to produce vanillin; Used as a preservative in the brewing industry; Rubber coagulants and dechlorination agents for bleached cotton fabrics; Organic intermediates; Used for printing and dyeing, leather making; Used as a reducing agent; Used for wastewater treatment in the electroplating industry, oil fields, and as a mineral processing agent in mines; Used as preservatives, bleaching agents, and loosening agents in food processing.

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