Sodium metabisulphite extrapure 500GM | |||
11630SG500 | C01200206DW | ||
Extrapure | C012002 | ||
7681-57-4 | 93628 | ||
Na2S2O5 | April 2023 | ||
190.1 | March 2028 | ||
Sr.No. | Test | Result | Specification |
---|---|---|---|
1 | Description | Fine white crystalline powder. | Fine white crystalline powder. |
2 | Solubility | Complies | Freely soluble in water. Slightly soluble in alcohol. |
3 | Assay(iodometric) | 96.81% | Min. 96.00% |
4 | pH(5% aq soln) | 4.09 | 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) |