Specification :

Synonyms: Sodium metabisulphite; Sodium metabisulfite; Sodium disulfite; Sodium disulphite; Sodium pyrosulfite;
Sodium pyrosulphite
Molecular formula: Na2S2O5
Molecular weight: 190.10
CAS  : 7681-57-4 EINECS  : 231-673-0 H.S.Code: 28321000
Properties: White or yellow crystalline powder or crystal with strong sulphur dioxide smell, specific gravity: 1.4, soluble in water, glycerine and little in ethanol , aqueous solution is acidic fluid.

Application: Mainly used in pharmaceutic materials, paper industry, photochem, bleaching, developer, leather chroming agent, rubber industry, dyes, printing dyeing, textile auxiliary, cotton wool, antichlor, chromate waste water treatment agent, anticorrosive, disinfecting etc..