Potassium phosphate monobasic - 60220
Code: 60220
Potassium phosphate monobasic
Puriss. p.a., Buffer substance, Anhydrous, ACS Reagent, Reag. ISO, Reag. Ph. Eur., 99.5-100.5%
Monopotassium phosphate; Potassium dihydrogen phosphate; prim.-Potassium phosphate
Anhydrous, ACS Reagent, Reag. ISO, Reag. Ph. Eur., 99.5-100.5%
CAS Number: 7778-77-0
Linear Formula: KH2PO4
Molar Mass: 136.09 g/mol
EC Number: 231-913-4
MDL Number: MFCD00011401
| Property |
Value |
| Assay (alk., calculated to dried substances) |
99.5 - 100.5 % |
| Assay |
min. 99.0 % |
| Loss on drying (130°C) |
max. 0.2 % |
| Water insoluble matter |
max. 0.005 % |
| PH (5 %, 25 °C) |
4.2 - 4.5 |
| Arsenic (As) |
max. 0.5 ppm |
| Calcium (Ca) |
max. 0.001 % |
| Cadmium (Cd) |
max. 0.0005 % |
| Cobalt (Co) |
max. 0.0005 % |
| Chromium (Cr) |
max. 0.0015 % |
| Copper (Cu) |
max. 0.0005 % |
| Iron (Fe) |
max. 5 ppm |
| Magnesium (Mg) |
max. 0.0005 % |
| Manganese (Mn) |
max. 0.0005 % |
| Nickel (Ni) |
max. 0.0005 % |
| Sodium (Na) |
max. 50 ppm |
| Lead (Pb) |
max. 0.0005 % |
| Zinc (Zn) |
max. 0.0005 % |
| Heavy metals (as Pb) |
max. 5 ppm |
| Chloride (Cl) |
max. 5 ppm |
| Sulfate (SO4) |
max. 30 ppm |
| Total N |
max. 0.001 % |
| KMnO4 reducing matter (as O) |
complying |
| Appearance of the solution |
complying |
| Appearance (color) |
complying |
| Appearance (form) |
complying |
| Property |
Value |
| PKa (25 °C) |
(1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid) |
| Freezing point |
253 °C |
| Density |
2.34 g/cm3 |
