CASR |
: | 7757-83-7 |
Molecular Formula |
: | Na2SO3 |
Molecular Weight |
: | 126.04 |
| Specifications | |
|---|---|
| Appearance: | White or almost white powder. |
| Solubility: | Freely soluble in water, very slightly soluble in ethanol(96%) |
| Identification A (By Chemical test): | Solution should slightly alkaline. |
| Identification B (sulfate): | A white precipitate should form. |
| Identification C (Sodium): | A dense white precipitate should form. |
| Identification D (By Assay): | 95.0% to 100.5% |
| Appearance of solution: | Clear and colourless solution. |
| Thiosulphate(S2O3): | NMT 0.1% |
| Iron(Fe): | NMT 10ppm |
| Zinc (Zn): | NMT 25ppm |
| Assay: | 95.0% to 100.5% |
