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Product Name: sodium CAS: 7681-57-4 Molecular formula: Na2S2O5 Physical and chemical properties: high purity sodium-class white crystalline powder. There is moisture absorption, soluble in water and glycerin. Aqueous solution of its acidic micro-soluble in ethanol. Slow oxidation in air into sulphates, the proportion of decomposition 1.4,1500 C, sealed Save Quality Index: Content: ≥ 98%, iron: ≤ 0.001%, oxides (Cl): <0.02%, heavy metals (Pb): <0.001%, water insoluble: <0.01%, sulfides (Na2SO4): <1.45 % Arsenic (As): <0.0002%, color: 20, PH value (10% solution): 3.2-4.5 Uses: This product uses the water quality of raw materials and water treatment circulating mother liquor of new technology, in the original production by improving conditions, as acrylic monomer polymerization of reducing agent, have reached Japan, West Germany, the quality of the products. And Can be widely used spices, dyes intermediates of medicine reducing agent, organic bleach, food preservation agent, coagulant, the brewing industry, preservatives, beverage syrup, cakes and fungicides such as bleach. Annual production of 3,000 tons. Packaging: 25KG / bags.