Sodium Phosphate Monobasic Dihydrate 99% AR
(sodium acid phosphate) (sodium dihydrogen orthophosphate)
Product Code. |
02489 |
Grade |
AR |
Purity |
99% |
CAS No. |
13472-35-0 |
Molecular Formula |
NaH2PO4.2H2O |
Molecular Weight |
156.01 |
H.S.Code |
28352200.00000 |
Shelf Life |
60 Months |
Physical Properties
| Physical state at 20 °C |
Solid |
Colour |
White crystalline |
Odour |
Odorless |
| pH value |
4.2 - 4.5 |
Melting point/ Freezing point [°C] |
60°C |
Density [g/cm3] |
1.92 |
| Solubility in water [% weight] |
Soluble in water |
Packaging
Specification
| Appearance | Colorless crystals or white crystalline powder |
| Assay | 99.0 - 100.5% |
| Identity (acc. to pharmacopoeias) | Passes test |
| Appearance of solution | Passes test |
| Insoluble matter in water | Max 0.01% |
| pH (1% solution in water) | 4.1-4.7 |
| pH (5% solution in water; 20°C) | 4.2-4.5 |
| pH (5.7% solution in water) | 4.1-4.5 |
| Chloride (Cl) | Max 0.001% |
| Sulphate (SO4) | Max 0.005% |
| Aluminium, calcium and related elements | Passes test |
| Substance reducing KMnO4 (as O) | Passes test |
| Arsenic (As) | Max 0.0002% |
| Calcium (Ca) | Max 0.002% |
| Iron (Fe) | Max 0.001% |
| Heavy metal (as Pb) | Max 0.0005% |
| Magnesium (Mg) | Max 0.001% |
| Potassium (K) | Max 0.005% |
| Loss on drying (at 130°C) | 21.5 - 24.0% |
Safety Information and Hazard Symbols