CASR |
: | 7757-83-7 |
Molecular Formula |
: | Na2SO3 |
Molecular Weight |
: | 126.04 |
| Specifications | |
|---|---|
| Description: | Colorless crystals. |
| Solubility: | Freely soluble in water; Insoluble in alcohol . |
| Identification A (By Chemical test): | A pink color should produce |
| 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 precipitate should produce. |
| Assay: | 95.0% - 100.5% |
| Iron(Fe): | NMT 10 ppm |
| Selenium (Se): | NMT 10 ppm |
| Thiosulfates: | NMT 0.1% |
| Zinc (Zn): | NMT 25 ppm |
| Color and Clarity of solution: | Clear and colorless solution |
| Total aerobic microbial count: | 100 cfu/gm max |
| Total Yeast & mold count: | 10 cfu/gm max |
| E.coli: | Must be absent per gm |
| Salmonella: | Must be absent per 10 gm |
| Pseud. aeruginosa: | Must be absent per gm |
| Bile-tolerant gram negative bacteria: | Must be absent per gm |
| Staphylococcus aureus: | Must be absent per gm |
| Bacterial endotoxins: | 2.5 EU/mg max. |
