Sodium Sulfite CAS 7757-83-7

Sodium Sulfite CAS NO:7757-83-7 Molecular formula:Na2SO3 Properties:White crystal or powder. Application: Used in Dyeing and printing Industry,as dechlorinating agent and bleaching agent,in leather and tanning industry as bleaching agent,reductant agent,stabilizer agent,or...

Product Details

Sodium Sulfite

CAS NO: 7757-83-7

Molecular formula: Na2SO3

Properties: White crystal or powder.

Application:

Used in Dyeing and printing Industry,as dechlorinating agent and bleaching agent,in leather and tanning industry as bleaching agent,reductant agent,stabilizer agent,or used in papermaking,electronic and water treatment industry.In food industry as additive used for preservative,antioxidant,antimicrobic and bacteriostatic.Also,used in the photographic industry and pharmaceutical industry.

Specification:

Items

Industry grade

Food grade

Content(Na2SO3)(%)

96.0 min.

98.0 min.

Sodium Sulfate(SO4)(%)

2.5 max..

1.5 max.

Chloride(NaCl)(%)

0.5 max.

0.1 max.

Arsenic(As)(%)

-

0.0002 max.

Heavy metals(as Pb)(%)

-

0.0005 max.

Iron(Fe)(%)

0.005 max.

0.002 max.

Water insoluble(%)

0.05 max.

0.02 max.

 

Items

Pharmaceutical grade

Photo grade

Content(Na2SO3)(%)

98.0 min.

98.0 min.

Sodium Sulfate(SO4)(%)

1.5 max.

1.5 max.

Chloride(Cl)(%)

0.05 max.

0.05 max.

Arsenic(As)(%)

0.0002 max.

0.0002 max.

Heavy metals(as Pb)(%)

0.0005 max.

0.0002 max.

Iron(Fe)(%)

0.001 max.

0.0005 max.

Selenium(Se)(%)

0.0001 max.

0.0005 max.

Zinc(Zn)(%)

0.0001 max.

0.0001 max.

Copper(Cu)(%)

0.0001 max.

0.00001 max.

Mercurg(Hg)(%)

0.0001 max.

0.00001 max.

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