CASR |
: | 10049-21-5 |
Molecular Formula |
: | NaH2PO4.H2O |
Molecular Weight |
: | 137.99 |
| Specifications | |
|---|---|
| Appearance: | Colorless crystals or a white powder. |
| Solubility: | Very soluble in water; very slightly soluble in ethanol (96%). |
| Identification A (By Chemical test): | Solution should be slightly acid. |
| Identification B (Phosphate 1): | A yellow precipitate whose color not change by boiling and which dissolves on addition of ammonia should form. |
| Identification B (Phosphate 2): | A yellow color should develop. |
| Identification C (Sodium): | A dense white precipitate should form. |
| Identification D (By Loss on drying): | 11.5% - 14.5% |
| Acidity: | pH of the solution should be 4.2 to 4.5 |
| Clarity and colour of solution: | Clear and colorless solution |
| Arsenic (As): | 2ppm max |
| Iron (Fe): | 10ppm max |
| Chlorides: | 200ppm max |
| Sulphate (SO4): | 300ppm max |
| Reducing substances: | The solution retains a slight red color. |
| Loss on drying at 130°C: | 11.5% - 14.5% |
| Assay (Dried substance): | 98.0% - 100.5% |
