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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 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 |
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% |