CASR |
: | 7778-77-0 |
Molecular Formula |
: | KH2PO4 |
Molecular Weight |
: | 136.09 |
| Specifications | |
|---|---|
| Description: | Colorless or white crystals , granular or crystalline powder. The PH of the solution (1 in 100) is about 4.5 |
| Aqueous solubility: | Freely soluble in water, practically insoluble in ethanol (96%) and alcohol |
| Assay (Alkalimetric): | 98.0% - 100.5% |
| Identification (By chemical test): | Solution should faintly acid |
| Identification (Phosphate 1): | A yellow color should develops |
| Identification (Phosphate 2): | With silver nitrate solution neutral solution should yield yellow precipitate that soluble in 2N nitric acid and 6 N ammonium hydroxide |
| Identification (Phosphate 3): | With ammonium molybdate solution, acidified solutions should yield a yellow precipitate that should soluble in 6N ammonium hydroxide |
| Identification (Potassium A): | A yellow or orange yellow precipitate should formed immediately |
| Identification (Potassium B): | White crystalline precipitate should form |
| Appearance of solution: | Clear and colourless solution |
| Insoluble Substances: | NMT 0.2% |
| pH (5% aq soln): | 4.2 - 4.5 |
| Carbonate: | No effervescence should produce |
| Condensed phosphate: | No opalescence should produce |
| Chloride (Cl): | NMT 0.009% |
| Fluoride(F): | NMT 0.001% |
| Sulfate (SO4): | NMT 0.017% |
| Heavy metals (as Pb): | NMT 0.001% |
| Aluminium (Al): | NMT 0.0005% |
| Arsenic (As): | NMT 0.0001% |
| Iron (Fe): | NMT 0.001% |
| Sodium (Na): | NMT 0.1% |
| Lead (Pb): | NMT 0.0004% |
| Antimony(Sb): | NMT 0.0009% |
| Loss on drying at 105°C: | NMT 0.5% |
| Loss on drying at 130°C: | NMT 1.0% |
| Reducing substances: | The colour of the permanganate should not be completely discharge |
| Bacterial endotoxins: | NMT 2.5IU/gm |
| Total aerobic microbial count: | NMT 100CFU/gm |
| Total Yeast and mold count: | NMT 100CFU/gm |
