Sodium phosphate dibasic - 71640
Code: 71640
Sodium phosphate dibasic
Puriss. p.a., ACS Reagent, anhydrous, ≥99.0% (T)
sec-Sodium phosphate; Disodium hydrogen phosphate; Disodium phosphate; Sodium hydrogenphosphate
≥99.0%, ACS Reagent, anhydrous
CAS Number: 7558-79-4
Linear Formula: Na2HPO4
Molar Mass: 141.96 g/mol
EC Number: 231-448-7
MDL Number: MFCD00003496
| Property |
Value |
| Assay |
99.0 - 101.0 % |
| Colour of the solution |
complying |
| Clearness of the solution |
complying |
| PH (5 %, 25 °C) |
8.7 - 9.3 |
| Loss on drying (105°C) |
max. 0.2 % |
| Water insoluble matter |
max. 0.01 % |
| Arsenic (As) |
max. 1 ppm |
| Calcium (Ca) |
max. 10 ppm |
| Cadmium (Cd) |
max. 5 ppm |
| Cobalt (Co) |
max. 5 ppm |
| Chromium (Cr) |
max. 10 ppm |
| Copper (Cu) |
max. 5 ppm |
| Iron (Fe) |
max. 5 ppm |
| Potassium (K) |
max. 50 ppm |
| Magnesium (Mg) |
max. 5 ppm |
| Manganese (Mn) |
max. 5 ppm |
| Nickel (Ni) |
max. 5 ppm |
| Lead (Pb) |
max. 2 ppm |
| Zinc (Zn) |
max. 5 ppm |
| Heavy metals (as Pb) |
max. 10 ppm |
| Total S (as SO4) |
max. 50 ppm |
| Chloride (Cl) |
max. 10 ppm |
| Total N |
max. 10 ppm |
| Property |
Value |
| PKa (25 °C) |
(1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid) |
