02191430-CF | CAS 7778-77-0 | Potassium phosphate, monobasic | MPBIO
Key Features and Details
Potassium phosphate is a reagent with high buffering capacity. It occurs in several forms: monobasic, dibasic, and tribasic (K3PO4). Most pH neutral potassium phosphate buffer solutions consist of mixtures of the monobasic and dibasic forms to varying degrees, depending on the desired pH.
| SKU | 02191430-CF |
| Alternate Names | Potassium biphosphate; Potassium acid phosphate; Potassium dihydrogen phosphate; Monopotassium phosphate; Sorensen’s potassium phosphate |
| Application Notes | Potassium Phosphate Monobasic is used as a component for a wide variety of media used in the culture of microorganisms, as a component in phosphate buffered saline (PBS). In addition to helping maintain pH, it supplies essential phosphate. |
| Base Catalog Number | 191430 |
| CAS # | 7778-77-0 |
| Density | 2.338 g/mL at 25 °C(lit.) |
| EC Number | 231-913-4 |
| Format | Crystalline |
| Grade | ACS grade, Anhydrous |
| Hazard Statements | H317 |
| Insoluble Matter | ≤0.01% |
| Melting Point | 252.6 °C(lit.) |
| Molecular Formula | KH2PO4 |
| Molecular Weight | 136.09 |
| Personal Protective Equipment | Eyeshields, Gloves, respirator filter |
| pH | 4.1 – 4.5(5% aq soln, 25 °C) |
| pKa | (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid) (25 °C) |
| RTECS Number | TC6615500 |
| Solubility | Soluble in water (0.5G in 10mL water), Insoluble to slightly soluble in ethanol; insoluble in alcohol. |
| Usage Statement | Unless specified otherwise, MP Biomedical’s products are for research or further manufacturing use only, not for direct human use. For more information, please contact our customer service department. |
