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 |