CASR |
: | 7757-83-7 |
Molecular Formula |
: | Na2SO3 |
Molecular Weight |
: | 126.04 |
| Specifications | |
|---|---|
| Appearance/Description: | Colorless crystals or white powder. |
| Solubility: | Freely soluble in water; very slightly soluble in alcohol. |
| Identification A (By Chemical test): | Slightly alkaline should produce pink color in solution. |
| Identification B (sulfate): | Colorless solution; should yield a white precipitate with barium chloride which should insoluble in hydrochloric acid and nitric acid |
| Identification C (for Sodium): | A dense white precipitate should produce. |
| Identification D (By Assay): | 95.0% - 100.5% |
| Assay: | 95.0% - 100.5% |
| Iron: | NMT 10 ppm |
| Selenium (Se): | NMT 10 ppm |
| Thiosulfates: | NMT 0.1% |
| Zinc (Zn): | NMT 25 ppm |
| Color and clarity of solution /Appearance of solution: | Clear and colorless solution |
| Total aerobic microbial count: | NMT 10 CFU/gm |
| Total Yeast and mold count: | NMT 10 CFU/gm |
| E.coli: | Should be absent /gm |
| Pseudomonas aeruginosa: | Should be absent /gm |
| Staphylococcus aureus: | Should be absent /gm |
| Salmonella: | Should be absent /10 gm |
| Bile-tolerant gram negative bacteria: | Should be absent /gm |
| Bacterial endotoxins: | NMT 0.1 EU/mg |
