CASR |
: | 10039-32-4 |
Molecular Formula |
: | Na2HPO4.12H2O |
Molecular Weight |
: | 358.14 |
| Specifications | |
|---|---|
| Description: | Colorless, transparent crystals, very efflorescent |
| Solubility: | Freely soluble in water; practically insoluble in ethanol (96%) |
| Identification (By chemical test): | Solution should be slightly alkaline |
| Identification (By Loss on drying): | 57.0% -61.0% |
| Identification (Sodium): | A dense precipitate should form. |
| Identification (Phosphate 1): | A yellow precipitate soluble in 2N nitric acid and in 6 N ammonium hydroxide should form. |
| Identification (Phosphate 2): | With ammonium molybdate solution, acidified solutions should yield a yellow precipitate which should soluble in 6N ammonium hydroxide. |
| Identification (Phosphate 3): | A yellow color should develop. |
| Assay (on dried basis): | 98.0% - 100.5% |
| Assay: | 98.5% - 102.5% |
| Insoluble Substances: | NMT 20mg (NMT 0.4%) |
| Appearance of solution: | Clear and colorless solution. |
| Reducing substances: | The color of the permanganate should not completely discharge |
| Monosodium Phosphate: | NMT 2.5% |
| Chlorides: | NMT 200ppm |
| Sulphate (SO4): | NMT 500ppm |
| Arsenic (As): | NMT 2ppm |
| Iron(Fe): | NMT 20ppm |
| Loss on drying at 130°C: | 57.0% -61.0% |
| Total aerobic microbial count: | NMT 100 CFU/gm |
| Total combined yeast and mould count: | NMT 10 CFU/ gm |
| Bacterial endotoxin test: | NMT 2.5 EU/gm |
