Sodium Metabisulfite(Industrial grade)
Alias:Sodium pyrosulfite
English name:Sodium Metabisulfite
Molecular formula:Na2S2O5
Molecular weight: 190.10
Appearance:White or yellowish crystal powder.
Quality standard: HG/T 2826-2008

Item	Index
	Superior quality	First class
Main content(Na2S2O5   ),%     ≥	96.5	95%
Iron(Fe),           %     ≤	0.005	0.01
Water-insoluble,         %     ≤	0.05	0.05
Arsenic(As),         %     ≤	0.0001	---

Use:Printing and dyeing mordant; antichlor in after fabric bleaching; chemical and medicine reducer and sulfonating agent; bleaching agent of bamboo, wood and paper fiber; nonferrous metal dressing agent; waste water finishing agent; rubber coagulator; alkyl spice aldehyde in spice industry; depilating agent, softening agent and anti-wear agent in leather industry; reducer of developer and protective agent of fixative in sensitization industry
Packing:25, 50, 1000kg/bag or customized in polypropylene woven bag lined with polyethylene plastic bag or plastic and paper compound bag, kraft bag, etc.