CASR |
: | 10039-32-4 |
Molecular Formula |
: | Na2HPO4.12H2O |
Molecular Weight |
: | 358.14 |
| Specifications | |
|---|---|
| Description: | Colourless, transparent crystals, very efflorescent |
| Solubility: | Freely soluble in water, practically insoluble in ethanol (96%) |
| Identification (Phosphate 1): | A light yellow precipitate should form, the color of which should not change by boiling and readily soluble in 10M ammonia and in dilute nitric acid |
| Identification (Phosphate 2): | white crystalline precipitate should form |
| Identification (Phosphate 3): | A bright yellow precipitate should form |
| Identification (Sodium 1): | A dense white precipitate should form |
| Identification (Sodium 2): | No precipitate should form |
| Identification (By Loss on drying): | 57.0% - 61.0% |
| Identification (By Chemical test): | Solution S is slightly alkaline |
| Appearance of solution: | Solution is clear and colourless. |
| Reducing substances: | The red colour is not completely discharged |
| Sodium dihydrogen phosphate: | NMT 0.025 |
| Chlorides: | NMT 200ppm |
| Sulphate (SO4): | NMT 500ppm |
| Arsenic (As): | NMT 2ppm |
| Iron(Fe): | NMT 20ppm |
| Heavy metals: | NMT 10ppm |
| Loss on drying: | 57.0% - 61.0% |
| Assay (Dried basis): | 98.5% - 102.5% |
| Total aerobic microbial count: | NMT 1000 CFU/gm |
| Total combined yeast and molds count: | NMT 100 CFU/gm |
| Bacterial endotoxin test: | NMT 2.5 EU/gm |
