CASR |
: | 7558-79-4 |
Molecular Formula |
: | Na2HPO4 |
Molecular Weight |
: | 141.96 |
Specifications | |
---|---|
Appearance: | A white or almost white powder, hygroscopic |
Solubility: | Soluble in water, practically insoluble in ethanol (96%). |
Identification A (By Chemical test): | Solution should slightly alkaline. |
Identification B (By Loss on drying): | Not more than 1.0% |
Identification C (By Chemical test): | A yellow colour should develop |
Identification D (By Chemical test): | A dense white precipitate should form. |
Appearance of solution: | Solution should be clear and colourless. |
Reducing substances: | The colour of the permanganate should not be completely discharge |
Monosodium Phosphate: | 2.5% max, |
Chlorides: | 200ppm max |
Sulphate (SO4): | 500ppm max |
Iron(Fe): | 20ppm max |
Loss on drying (105 °C, 4 hr): | Not more than 1.0% |
Assay (Dried substance): | 98.0% - 101.0% |
Arsenic (As): | 2ppm max |