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sodium metabisulfite
Category : Inorganic chemicals/Inorganic acids
CAS NO : 7681-57-4 EC NO : 231-673-0 MF : Na2S2O5 MW : 190.1065 Product description : Specifications sodium pyrosulfite 1.monthly output about 3000MT 2.Purity(Na2S2O5): 96% Min 3.SO2 Content: 65% Min 4.CAS No.:7681-57-4 sodium pyrosulfite (1)Molecular formula: Na2S2O5 (2)CAS No.: 7681-57-4 (3) Physical appearance: white or slightly yellowish crystalline powder (4)Specification:Main Content: 96%min, Water Insoluble: 0.05%max, Iron: 50ppm max, Pb: 10ppm max, As: 2ppm max ,pH: 4.0-4.6 (5)Bag marks:Sodium metabisulphite, N.W.: 25kgs, G.W. 25.1kgs, Made in China. (6)Main use: For tech use a):Bleaching agent for textile fibres, paper pulps b):Colors stripper and dechlorination c):Preparation of Indigo Vat Dye d):solubilizing and acidyfing agent for leather industries e):wastewater treatment (7)Packing:25kgs net PP woven bag with PE liner (if need, we could arrange the pallet.) Synonyms : Sodium pyrosulfite;disodium disulphite;Sodium metabisulphite;Sodium disulphite;Sodium pyrosulphite;SODIUM DISULFITE;disodium oxidosulfanesulfonate oxide;Sodium Metabi;Metabisulfite Sodium;Sodium Metabisulfite (Food Grade); Molecular Structure : 
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