Sodium Hydrosulphite

Description

HS CODE: 28311010

CAS NO.: 7775-14-6

Molecular formula: Na₂S₂O₄

Property: White free-flow crystal powders. The bulk specific weight is 0.7-1.0g/m3 , dissolve in water, slightly dissolve in ethanol. Give off heat and cause combustion easily. Spontaneous decomposition occurs when the temperature is higher than 85℃, heats up to 190℃cause detonation. Self-ignition point is 250℃.

Application

For synthesis and stability of the catalyst agent;
Reducing agent of printing and dyeing industry;
The leather industry, chromium tanning method of camouflage acid;
Used in the production of sodium hydrosulfite, oxalic acid and formic acid;
Used in the preparation of early strength and low toxicity, oil field drilling fluid.

Packing: In 50kgs/100kgs iron drum

Specification:

Item	Standard
Guidelines	85%	88%	90%
Na₂S₂O₄	85% min	88% min	90% min
Fe	20ppm max	20ppm max	20ppm max
Zinc (Zn)	1ppm max	1ppm max	1ppm max
Other heavy metal (whth Pb to calculate)	1ppm max	1ppm max	1ppm max
Matter which does not dissolve in water	0.05% max	0.05% max	0.05% max
Storage time limit (month)	12 max	12 max	12 max

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Sodium Hydrosulphite