CASR |
: | 7558-79-4 |
Molecular Formula |
: | Na2HPO4 |
Molecular Weight |
: | 141.96 |
Specifications | |
---|---|
Description: | White powder that readily absorbs moisture. |
Solubility: | Freely soluble in water; insoluble in alcohol |
Identification A (Sodium): | A dense precipitate should form. |
Identification B (Phosphate 1): | With silver nitrate solution neutral solution should yield yellow precipitate that soluble in 2N nitric acid and 6 N ammonium hydroxide. |
Identification B (Phosphate 2): | With ammonium molybdate solution, acidified solutions should yield a yellow precipitate that should soluble in 6N ammonium hydroxide. |
Assay (on dry basis): | 98.0% - 100.5% (Na2HPO4) |
Insoluble Substances: | NMT 0.4% |
Chlorides: | NMT 0.06% |
Sulfate (SO4): | NMT 0.2% |
Arsenic (As): | NMT 16ppm |
Loss on drying,130°C: | NMT 5.0% |