Potassium phosphate monobasic
SIAL/60229 - tested according to Ph. Eur., anhydrous
Synonym: Kalii dihydrogenophosphas; Monopotassium phosphate; Potassium dihydrogen phosphate; prim.-Potassium phosphate
CAS Number: 7778-77-0
Empirical Formula (Hill Notation): H2KO4P
Molecular Weight: 136.09
EC Number: 231-913-4
MDL Number: MFCD00011401
Linear Formula: KH2PO4
Product Type: Chemical
| agency | tested according to Ph. Eur. |
| USP/NF | |
| assay | 98-100.5% dry basis |
| density | 2.338 g/mL at 25 °C (lit.) |
| form | crystalline |
| grade | anhydrous |
| InChI | 1S/K.H3O4P/c;1-5(2,3)4/h; |
| InChI key | GNSKLFRGEWLPPA-UHFFFAOYSA |
| loss | <2.0% loss on drying |
| mp | 252.6 °C (lit.) |
| pKa (25 °C) | (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid) |
| Quality Level | 200  |
| SMILES string | [K+].OP(O)([O-])=O |
| solubility | water: 208 g/L at 20 °C |
| Application: | Potassium phosphate monobasic buffer has been used as a component of the mobile phase in high-performance liquid chromatography (HPLC). |
| Biochem/physiol Actions: | Potassium phosphate monobasic (MKP) is a commonly used buffering agent in biochemical and biological applications. It is used as a component of the buffer system in electrophoresis for the separation of biomolecules. |
| Features and Benefits: | Assured high quality as it is tested according to both USP/NF and Ph. Eur. standards |
| General description: | Potassium phosphate monobasic (KH2PO4), also known as monopotassium phosphate(MKP), is a soluble salt. It serves as a source of phosphorus and potassium. KH2PO4 is an essential component of potassium phosphate buffer, which is utilized in aqueous two-phase systems (ATPS) that are often used in the purification of lipases. |
| RIDADR | NONH for all modes of transport |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | 98-100.5% dry basis |
| mp | 252.6 °C (lit.) |
| Density | 2.338 g/mL at 25 °C (lit.) |
| UNSPSC | 12161700 |