CASR |
: | 7631-90-5 |
Molecular Formula |
: | NaHSO3 |
Molecular Weight |
: | 104.06 |
Specifications | |
---|---|
Description: | White granules or powder, having the odour of sulfur dioxide. |
Solubility: | Freely soluble in water, practically insoluble in ethanol and in diethyl ether. |
Identification A (By Chemical test): | Gives positive test for sodium |
Identification B (By Chemical test): | Gives positive test for bisulfite |
Clarity and colour of solution: | The solution is clear and colorless. |
Thiosulfate (S2O3): | No turbidity is produced |
Heavy metals: | NMT 20ppm |
Iron (Fe): | NMT 20ppm |
Arsenic (As): | NMT 4ppm |
Assay: | NLT 64.0% and NMT 67.4 % of SO2 |