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Properties: white or yellow crystalline powder or small crystals, with strong SO2 odor, specific gravity 1.4, soluble in water, aqueous solution is acidic, and strong acid contact will release SO2 and generate the corresponding salts, long in the air, then oxidized into Na2S2O6, so the product can not be stored for a long time. Above 1500C, SO2 is separated.
Molecular formula: Na2S205
CAS No.:7681-57-4
Molecular weight: 190.09
Appearance: White crystalline powder or small crystals
Packing:
1. The packaging bag (barrel) should be painted with a firm mark, including: product name, grade, net weight and manufacturer name;
2. Sodium metabisulfite is packed in plastic woven bags or barrels, lined with plastic bags, net weight 25 or 1000kg, customized according to customer requirements;
3, the product transportation, storage should prevent damage, damp, heat deterioration. It is forbidden to coexist with oxidant and acid;
4. The storage period of this product is 6 months from the date of production.
Uses: in food processing as a preservative, bleach, loose agent. Can be used to make biscuits, pastries and other food needed in the flour to play the role of bleaching. It can make bread, biscuits and other foods become loose, taste more crispy. Adding sodium metabisulfite in fruit juice and canned food can increase its shelf life, and carry out better sterilization to play the role of antiseptic sterilization. As an antioxidant preservative, it has good antioxidant effect and preservation effect on seafood, fruits and vegetables.