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Sodium Hydrosulfite
Molecular formula:Na2S2O4
Molecular weight:174.09
CAS No.:7775-14-6
Property:White crystalline powder, easily soluble in water, very slightly soluble in alcohol.
Usage:This product is strength oxidant and is used as bleaching agent for textile and papermaking industry, as synthetic for medicine-making, as absorbent for analysis chemical, and as flotation agent of nonferrous color metal for metallurgical industry.
Packing:Net in 50KG Iron Drum.
Specification:


Index

I

II

III

Sodium Hydrosulphite

90% Min

88% Min

85% Min

Water insoluble

0.1% Max

0.1% Max

0.1% Max

Sodium thiosulfate: Na2S2O3

1.3% Max

1.3% Max

1.3% Max

Sodium metabisulfite: Na2S2O5

5-7 %

5-7%

5-7%

Sodium bisulfite:NaHSO3

0.5% Max

0.5% Max

0.5% Max

Sodium carbonate: Na2CO3

0.6-2%

0.6%-2%

0.6%-2%

Sodium formate: HCOONa

0.5% Max

0.5% Max

0.5% Max

Zn

0.0001% Max

0.0001% Max

0.0001% Max

Fe

0.005% Max

0.005% Max

0.005% Max

Physical appearance

White crystalline powder