CASR |
: | 7782-85-6 |
Molecular Formula |
: | Na2HPO4.7H2O |
Molecular Weight |
: | 268.07 |
| Specifications | |
|---|---|
| Description: | Colorless or white, granular or caked salt. Effloresces in warm, dry air. Its solutions are alkaline to phenolphthalein. A 0.1M solution should have a pH about 9. |
| Solubility: | Freely soluble in water; very slightly soluble in alcohol |
| Identification A (By Chemical test): | A dense precipitate should form. |
| Identification B (By Chemical test 1): | With silver nitrate solution neutral solution should yield yellow precipitate that soluble in 2N nitric acid and 6 N ammonium hydroxide. |
| Identification B (By Chemical test 2): | With ammonium molybdate solution, acidified solutions should yield a yellow precipitate that should soluble in 6N ammonium hydroxide. |
| Assay (on dried basis): | 98.0% - 100.5% (Na2HPO4) |
| Insoluble Substances: | NMT 0.4% |
| Chlorides: | NMT 0.06% |
| Sulfate (SO4): | NMT 0.2% |
| Arsenic (As): | NMT 1.5ppm |
| Loss on drying,130°C: | 43.0% - 50.0% |
| Total aerobic microbial count: | NMT 100 CFU/gm |
| Total Yeast & mold count: | NMT 10 CFU/gm |
| Escherichia coli: | should be absent/gm |
| Salmonella: | should be absent/ 10gm |
| Pseud. aeruginosa: | should be absent/gm |
| Staphylococcus aureus: | should be absent/gm |
| Bile-tolerant gram negative bacteria: | should be absent/gm |
| Bacterial endotoxins: | NMT 2.5 EU/mg |
