CASR |
: | 7681-57-4 |
Molecular Formula |
: | Na2S2O5 |
Molecular Weight |
: | 190.1 |
| Specifications | |
|---|---|
| Description: | Fine white crystalline powder. |
| Solubility: | Freely soluble in water. Slightly soluble in alcohol. |
| Assay(iodometric): | Min. 96.00% |
| pH(5% aq soln): | 3.8 - 5.3 |
| Chloride(Cl): | 0.05% max |
| Thiosulphate(S2O3): | 0.05% max |
| Iron(Fe): | 0.001% max |
| Heavy metal(as Pb): | 0.002% max |
