CASR |
: | 10049-21-5 |
Molecular Formula |
: | NaH2PO4.H2O |
Molecular Weight |
: | 137.99 |
| Specifications | |
|---|---|
| Description: | Colorless crystals or a white crystalline powder. Its solutions are acid to litmus and effervesce with sodium carbonate |
| Solubility: | Very soluble in water; very slightly soluble in ethanol (96%). practically insoluble in alcohol |
| Assay (Alkalimetric): | 98.0% - 100.5% |
| Identification (By chemical test): | Solution should be slightly acid |
| Identification (Phosphate 1): | A neutral solution should yield yellow precipitate with silver nitrate solution that soluble in 2N nitric acid and 6 N ammonium hydroxide |
| Identification (Phosphate 2): | With ammonium molybdate solution, acidified solutions should yield a yellow precipitate with ammonium molybdate solution which should soluble in 6N ammonium hydroxide |
| Identification (Sodium): | A dense precipitate should form |
| Identification (By Loss on drying): | 11.5% 14.5% |
| Appearance of solution: | Clear and colorless solution |
| Insoluble Substances: | NMT 0.2% |
| pH (5% aq soln): | 4.2 – 4.5 |
| Chloride (Cl): | NMT 0.014% |
| Sulfate (SO4): | NMT 0.03% |
| Heavy metals (as Pb): | NMT 0.001% |
| Aluminium (Al): | NMT 0.0002% |
| Arsenic (As): | NMT 0.0002% |
| Iron (Fe): | NMT 0.001% |
| Aluminium, Calcium and Related Element: | The sample solution should not become turbid when rendered slightly alkaline to litmus paper with 6N ammonium hydroxide |
| Reducing substances: | The solution retains a slight red color. |
| Loss on drying at 130°C: | 11.5% - 14.5% |
| Water: | 10.0% - 15.0% |
| Total aerobic microbial count: | NMT 100CFU/gm |
| Total Yeast and mold count: | NMT 100CFU/gm |
| Bacterial endotoxins: | NMT 2.5IU/gm |
