CASR |
: | 7558-80-7 |
Molecular Formula |
: | NaH2PO4 |
Molecular Weight |
: | 119.98 |
| Specifications | |
|---|---|
| Description: | Colorless crystals or white, crystalline powder. Is odorless and is slightly deliquescent. Its solutions are acid to litmus and effervesce with sodium carbonate. |
| Solubility: | Freely soluble in water; practically insoluble in alcohol. |
| Identification A (Sodium): | A dense precipitate should form. |
| Identification B (Phosphate 1): | A 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. |
| Identification (By chemical test 1): | Solution should be slightly acid |
| Identification (By Loss on drying): | NMT 1.0% |
| Assay (Anhydrous basis): | 98.0% - 103.0% |
| Assay (Dried substance): | 98.0%-100.5% |
| Insoluble Substances: | NMT 0.2% |
| Chlorides: | NMT 0.014% |
| Sulfate (SO4): | NMT 0.15% |
| Aluminium, Calcium and Related Element: | The sample solution should not become turbid when rendered slightly alkaline to litmus paper with 6N ammonium hydroxide. |
| Arsenic (As): | NMT 2 ppm |
| Iron (Fe): | NMT 10 ppm |
| Acidity: | pH of the solution should be 4.2-4.5 |
| pH: | 4.1 -4.5 |
| Clarity and colour of solution: | Clear and colorless solution |
| Water: | NMT 2.0% |
| Loss on drying at 130°C: | NMT 1.0% |
| Reducing substances: | The solution should retain slight red color |
| Total aerobic microbial count: | NMT 100 CFU/gm |
| Total Yeast & mold count: | NMT 10 CFU/gm |
| Escherichia coli: | should be absent/gm |
| Salmonella: | should be absent/10 gm |
| Pseud. aeruginosa: | should be absent/gm |
| Staphylococcus aureus: | should be absent/gm |
| Bile-tolerant gram negative bacteria: | should be absent/gm |
| Bacterial endotoxins: | NMT 2.5 EU/gm |
