Sodium Phosphate Dibasic Anhydrous 98% Extrapure
sec-Sodium phosphate; Disodium hydrogen phosphate; Disodium phosphat; Sodium hydrogen phosphate
Product Code. |
02480 |
Grade |
|
Purity |
98% |
CAS No. |
7558-79-4 |
Molecular Formula |
Na2HPO4 |
Molecular Weight |
141.96 |
H.S.Code |
2835.29900 |
Shelf Life |
60 Months |
Physical Properties
| Physical state at 20 °C |
Solid |
Colour |
White crystalline |
Odour |
Odorless |
| pH value |
8.9 - 9.2 at 50 g/l at 25 °C |
Melting point/ Freezing point [°C] |
240°C |
Decomposition point [°C] |
240°C |
| Vapour density |
4.9 |
Density [g/cm3] |
1.52 |
Solubility in water [% weight] |
Soluble in water |
Packaging
Specification
| Appearance | White granular powder/Crystalline powder |
| Assay | 98 - 100.5% |
| pH (1% solution in water) | 8.7 - 9.3 |
| Substance insoluble in water | Max 0.2% |
| Chloride (Cl) | Max 0.02% |
| Fluoride (F) | Max 0.001% |
| Sulphate (SO4) | Max 0.05% |
| Heavy metal (as Pb) | Max 0.001% |
| Ammonium (NH4) | Max 0.002% |
| Arsenic (As) | Max 0.0002% |
| Copper (Cu) | Max 0.0025% |
| Iron (Fe) | Max 0.002% |
| Lead (Pb) | Max 0.001% |
| Zinc (Zn) | Max 0.0025% |
| Loss on drying (at 130°C) | Max 1.0% |
Safety Information and Hazard Symbols