CASR |
: | 13472-35-0 |
Molecular Formula |
: | NaH2PO4.2H2O |
Molecular Weight |
: | 156.01 |
| Specifications | |
|---|---|
| Appearance: | A white or almost white powder or colourless crystals. |
| Solubility: | Very soluble in water, very slightly soluble in ethanol (96%) |
| Identification A (By Chemical test): | Solution should be slightly acid |
| Identification B1 (Phosphate): | A yellow precipitate should form which colour does not changes by boiling and which dissolves on addition of ammonia. |
| Identification B2 (Phosphate): | A yellow color should develop |
| Identification C (for Sodium): | A dense white precipitate should form |
| Appearance of solution: | Clear and colorless solution |
| pH: | 4.2 - 4.5 |
| Reducing substances: | The color of permanganate should not completely discharge |
| Chlorides: | NMT 200ppm |
| Sulphate (SO4): | NMT 300ppm |
| Arsenic (As): | NMT 2ppm |
| Iron (Fe): | NMT 10ppm |
| Loss on drying,130°C: | 21.5% - 24.0% |
| Assay (on dried basis): | 98.0% - 100.5% |
