| Sodium metabisulfite USP-NF/Ph.Eur 500GM | |||
| 91630SG500 | 43070H605CX | ||
| USP-NF/Ph.Eur | 43070H6 | ||
| 7681-57-4 | 101870 | ||
| Na2S2O5 | March 2024 | ||
| 190.1 | February 2027 | ||
| Sr.No. | Test | Result | Specification |
|---|---|---|---|
| 1 | Appearance | Almost white crystalline powder. | White or almost white to yellowish crystalline powder or colorless crystals. |
| 2 | Solubility | Complies | Freely soluble in water. Slightly soluble in ethanol (96%) and in alcohol. |
| 3 | Identification A (By pH) | 4.15 | 3.5 to 5.0 |
| 4 | Identification (Reaction of sulfates) | Complies | White precipitate should form |
| 5 | Identification (Reaction of sodium) | Complies | A dense white precipitate should form |
| 6 | Identification (Sulfite) | Complies | A filter paper moistened with mercurous nitrate solution should blacken |
| 7 | Appearance of solution | Complies | Clear and colorless solution |
| 8 | pH | 4.15 | 3.5 to 5.0 |
| 9 | Thiosulfates | Complies | The solution should remain clear for at least 15 min |
| 10 | Limit of Thiosulfate | Less than 0.05% | NMT 0.05% |
| 11 | Iron (Fe) | Less than 20ppm | NMT 20ppm (0.002%) |
| 12 | Limit of Chloride | Less than 0.05% | NMT 0.05% |
| 13 | Assay (as SO2) | 65.1% | 65.0%- 67.4% |
| 14 | Assay | 96.6% | 95.0% - 100.5% |
Remarks: THE CAPTIONED MATERIAL COMPLIES WITH THE PRESCRIBED QUALITY OF USP-NF AND PH.EUR SPECIFICATION.
FINAR provides this analytical report in good faith and to the best of its knowledge. It should not be substituted for the users own raw material quality control.
| Tested By (Chemist - Quality Control) | Approved By (Head - Quality Control) |
Computer Generated Report - Does not require Signature.
