
| Sodium metabisulphite extrapure 5KG | |||
| 11630SR500 | 961150206DZ | ||
| Extrapure | 9611502 | ||
| 7681-57-4 | 118684 | ||
| Na2S2O5 | April 2026 | ||
| 190.1 | March 2031 | ||
| Sr.No. | Test | Result | Specification | Method Reference |
|---|---|---|---|---|
| 1 | Description | Fine white crystalline powder. | Fine white crystalline powder. | |
| 2 | Solubility | Complies | Freely soluble in water. Slightly soluble in alcohol. | |
| 3 | Assay(iodometric) | 97.34% | Min. 96.00% | |
| 4 | pH(5% aq soln) | 4.6 | 3.8 - 5.3 | |
| 5 | Chloride(Cl) | Less than 0.05% | 0.05% max | |
| 6 | Thiosulphate(S2O3) | Less than 0.05% | 0.05% max | |
| 7 | Iron(Fe) | Less than 0.001% | 0.001% max | |
| 8 | Heavy metal(as Pb) | Less than 0.002% | 0.002% max |
| Tested By (Chemist - Quality Control) | Approved By (Head - Quality Control) |