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Sodium Metabisulfite/Sodium Pyrosulfite

Molecular formla:Na2S2O5 Molecular weight:190.09 CAS NO.:7681-57-4 EINECS NO.:231-673-0 Appearance:White or yellowish crystal powder Odor:strong SO2 odor Solubility:Soluble in water and acidic in aqueous solution

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Model:
industrial grade

Product Description

1.Specification：HG/T 2826-2008

Item	Index
Item	Superior quality	First class
Main content(Na₂S₂O_4),% ≥	96.5	95
Iron(Fe),% ≤	0.005	0.01
Water-insoluble,% ≤	0.05	0.05
Arsenic(As) ,% ≤	0.0001	---

2.Uses

1) Printing and dyeing mordant
2) Antichlor in after fabric bleaching
3) Chemical and medicine reducer and sulfonating agent
4) Bleaching agent of bamboo
5) Wood and paper fiber
6) Nonferrous metal dressing agent
7) Waste water finishing agent
8) Rubber coagulator
9) Alkyl spice aldeheyde in spice industry
10) Depilating agent
11) Softening agent and anti-wear agent in leather industry
12) Reducer of developer and protective agent of fixative in sensitization industry

3.Packing and Transport

Packing：25/50/1000kg bag

Transport: should be protected from rain and sunlight.It is strictly prohibited to store and transport with acids,oxidants and harmful and toxic substances.

Storage: Should be stored in a dry,clean warehouse.The package should be sealed to prevent air oxidation.Guard against moisture.