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Sodium Phosphate Dibasic Dodecahydrate 98.5% Extrapure
sec-Sodium phosphate; Sodium phosphate dibasic; Disodium phosphat; Sodium hydrogen phosphate dodecahydrate
Product Code. |
02486 |
Grade |
|
Purity |
98.5% |
CAS No. |
10039-32-4 |
Molecular Formula |
Na2HPO4.12H2O |
Molecular Weight |
358.14 |
H.S.Code |
2835.29900 |
Shelf Life |
60 Months |
Physical Properties
| Physical state at 20 °C |
Solid |
Colour |
Colorless crystals |
Odour |
Odorless |
| pH value |
8.4 - 9.6 at 36 g/l at 25 °C |
Melting point/ Freezing point [°C] |
34°C |
Density [g/cm3] |
1.5 |
| Solubility in water [% weight] |
35.8 g/l at 20 °C |
Packaging
Specification
| Appearance | Colourless crystals |
| Assay (acidimetric) | 98.5 - 100.5% |
| pH (5% solution in water) | 9.0 - 9.3 |
| Chloride (Cl) | Max. 0.01% |
| Sulphate (SO4) | Max. 0.01% |
| Sodium dihydrogen phosphate (NaH2PO4) | Max. 1.0% |
| Heavy metal (as Pb) | Max. 0.001% |
| Iron (Fe) | Max. 0.001% |
| Arsenic (As) | Max. 0.0001% |
| Substance reducing KMnO4 (as O) | Max. 0.02% |
| Loss on drying (at 130°C) | 57 - 61% |
| Water (by KF) | 57 - 61% |
Safety Information and Hazard Symbols