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. |