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Sodium Hydrosulphite

CAS No.: 7775-14-6
EINECS No.: 231-890-0
Properties: Free-flowing white crystalline powder, Odorless or with a slight odor of sulfur dioxide, not soluble in ethanol, soluble in sodium hydroxide solution. Strong reaction with water and burn.
Usage: It is widely used in the textile industry for vat dyeing, reduction cleaning, printing and stripping, textile materials bleaching. It is also used in bleaching paper pulps, especially mechanical pulp; bleaching kaolin clay and foodstuffs. As a reducing agent, it is used in organic synthesizing.
Packing: 50kg iron drum

CAS No.: 7775-14-6

EINECS No.: 231-890-0

Properties: Free-flowing white crystalline powder, Odorless or with a slight odor of sulfur dioxide, not soluble in ethanol, soluble in sodium hydroxide solution. Strong reaction with water and burn.

Usage: It is widely used in the textile industry for vat dyeing, reduction cleaning, printing and stripping, textile materials bleaching. It is also used in bleaching paper pulps, especially mechanical pulp; bleaching kaolin clay and foodstuffs. As a reducing agent, it is used in organic synthesizing.

Packing: 50kg iron drum

Specification:


90% grade

88% grade

85% grade

Na2CO3(wt%)

1.5-2.5

1.5-2.5

2-6

Na2S2O3(wt%)

0.5-1.5

0.8-1.5

1-1.5

Na2S2O5(wt%)

3.5-7

3.5-5.5

4-7

HCOONa(wt%)

1.5-2.5

1.5-2.5

1.5-2.5

Fe(ppm)

18max

18max

20max

Water Insolubles:

0.1%max

0.1%max

0.1%max

Total other heavy metals

10ppm max

10ppm max

10ppm max

Storage stability: Qualified