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焦亚硫酸钠 Sodium metabisulfite Molecular formula: Na2S2O5 CAS number: 7681-57-4 use 1. Food grade: bleach (such as candy, cakes, bamboo shoots, etc.); loosening agent (such as bread, biscuits, etc.); preservatives and fungicides (such as juice, canned food, beer, cereal, etc.) Protective storage of food, etc. ); inhibitors and fresheners (such as lilies, seafood, fruits and vegetables, etc.). 2. Industrial grade: mordant for printing and dyeing; dechlorination after bleaching of textiles; sulfonating agent and reducing agent for chemical and pharmaceutical industries; pulp bleach, bamboo bleach, wood bleach; wastewater treatment agent; rubber coagulant used in the perfume industry Hydrocarbon aldehyde. Peeling dosage, flexibility dosage and wear-resistant dosage used in the leather industry; sewage treatment, etc. 3. Pharmaceutical grade: used in chemical synthesis to produce acrylic fiber, vitamin K, vitamin A, pharmaceutical intermediates,
