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Sodium Sulphite CAS NO 7757-83-7 Molecular Weight: 126.04
Other Names: Sodium Sulfite
Specification: 92%, 96%, 97% Min.
CAS No.: 7757-83-7
Molecular Formula: Na2SO3
Molecular Weight: 126.04
Property
White crystal powder. Specific gravity: 2.633. Melting point: 150℃. soluble in water, lightly soluble in alcohol. Water solution appears light alkalinity, it decomposition when heated, and has reduction role. It becomes sodium sulphate when oxidation in the air, it is easy to decompose when meet inorganic acid, it will release CO2 gas.
Specification
Item | I | II |
Na2SO3% | 96.0 min. | 97min. |
Fe % | 0.005 max. | 0.003max. |
Water insoluble material % | 0.03 max. | 0.02max. |
Free alkali (by sodium carbonate) % | 0.40 max. | 0.10max. |
Na2SO4% | --- | 2.5max. |
NaCl % | ---- | 0.10max. |
Aplication
Packing
Packed in braided bag, lined with a polyethylene bag,N.W.25kg each.
Store
It should be stored in a cool, well-ventilated and dry place, away from solarization, flame source and heat source.