Potassium Phosphate Monobasic 500g
Potassium phosphate monobasic has been used in the preparation of phosphate buffer and phosphate buffered saline (PBS).
It has also been used in the preparation of PEG1000 (poly ethylene glycol)/potassium phosphate aqueous two-phase systems.
| grade | ACS reagent |
| assay | ≥99.0% |
| impurities | ≤0.01% Insoluble matter |
| loss | ≤0.2% loss on drying, 105°C |
| pH | 4.1-4.5 (25 °C, 5%) |
| pKa (25 °C) | (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid) |
| mp | 252.6 °C (lit.) |
| density | 2.338 g/mL at 25 °C (lit.) |
| anion traces | chloride (Cl–): ≤0.001% |
| sulfate (SO42-): ≤0.003% | |
| cation traces | Fe: ≤0.002% |
| Na: ≤0.005% | |
| heavy metals: ≤0.001% (by ICP-OES) | |
| SMILES string | [K+].OP(O)([O-])=O |
| InChI | 1S/K.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+1;/p-1 |
| InChI key | GNSKLFRGEWLPPA-UHFFFAOYSA-M |
