Sodium sulfite USP-NF 500GM | |||
90690SG500 | 344210828CU | ||
USP-NF | 3442108 | ||
7757-83-7 | 76745 | ||
Na2SO3 | March 2021 | ||
126.04 | February 2024 | ||
Sr.No. | Test | Result | Specification |
---|---|---|---|
1 | Description | Colorless crystals. | Colorless crystals. |
2 | Solubility | Passes | Freely soluble in water;very slightly soluble in alcohol . |
3 | Identification A (By Chemical test) | Complies | A pink color should produce |
4 | Identification B (sulfate) | Complies | Colorless solution; should yield a white precipitate with barium chloride which should insoluble in hydrochloric acid and nitric acid |
5 | Identification C (for Sodium) | Complies | A dense precipitate should produce. |
6 | Assay | 97.3% | 95.0% - 100.5% |
7 | Iron | Less than 10 ppm | NMT 10 ppm |
8 | Selenium (Se) | Less than 10 ppm | NMT 10 ppm |
9 | Thiosulfates | Less than 0.1% | NMT 0.1% |
10 | Zinc (Zn) | Less than 25 ppm | NMT 25 ppm |
11 | Color and Clarity of solution | Passes | Clear and colorless solution |
Tested By (Chemist - Quality Control) | Approved By (Head - Quality Control) |