English Name: Sodium Pyrosulfite
Chinese alias: sodium pyrosulfite; a shrinkage of two sodium sulfite; sodium Metabisufite; coke sodium sulfite; sodium metabisulfite; sodium pyrosulfite; edible sodium metabisulfite.
CAS:7681-57-4
Molecular formula: Na2S2O5
Molecular weight: 190.09
Appearance: white or light yellow crystalline powder or small crystals. There are sulfur dioxide, acid taste, salty, storage time color yellow.
Effect: 1 in industry, used as a bleaching agent, mordant, reducing agent, rubber coagulator, also used in organic synthesis and spices.
2 used as chromatographic analysis reagent, preservatives and reducing agent, used in dyes and the pharmaceutical industry.
3 in the food is used as a bleaching agent, preservative, osteoporosis agent, antioxidant, color fixative and preservative.
4 the pharmaceutical industry for the production of chloroform, benzene propyl sulfone and benzaldehyde. Rubber industry as coagulant. Printing and dyeing industry as cotton bleached dechlorination agent, cotton fabric scouring agent. Tanning industry for leather processing, can make leather soft and plump, tough, waterproof, anti bending and abrasion resistance. The chemical industry for the production of vanillin and hydroxylamine hydrochloride. The photographic industry as a developer etc..
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