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: | 2.5 EU/gm |