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. |
Assay (Anhydrous basis): | 98.0% - 103.0% |
Insoluble Substances: | NMT 0.2% |
Chlorides: | NMT 0.014% |
Sulphate (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 8ppm |
pH: | 4.1 -4.5 |
Water: | NMT 2.0% |