Potassium phosphate monobasic
SIAL/57618 - suitable for HPLC, LiChropur™, 99.5-101.0% (T)
Synonym: 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
λ | 10 % in H2O |
assay | 99.5-101.0% (T) |
density | 2.338 g/mL at 25 °C (lit.) |
form | solid |
InChI | 1S/K.H3O4P/c;1-5(2,3)4/h; |
InChI key | GNSKLFRGEWLPPA-UHFFFAOYSA |
mp | 252.6 °C (lit.) |
pH | 4.1-4.5 |
pKa (25 °C) | (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid) |
quality | LiChropur™ |
SMILES string | [K+].OP(O)([O-])=O |
solubility | H2O: 10%, clear, colorless |
technique(s) | HPLC: suitable |
UV absorption | λ: 210 nm Amax: ≤0.1 |
λ: 220 nm Amax: ≤0.06 | |
λ: 230 nm Amax: ≤0.04 | |
λ: 300 nm Amax: ≤0.02 | |
λ: 500 nm Amax: ≤0.02 |
Legal Information: | LiChropur is a trademark of Merck KGaA, Darmstadt, Germany |
Recommended products: | Discover LiChropur™ reagents ideal for HPLC ![]() ![]() |
RIDADR | NONH for all modes of transport |
WGK Germany | WGK 1 |
Purity | 99.5-101.0% (T) |
mp | 252.6 °C (lit.) |
Density | 2.338 g/mL at 25 °C (lit.) |
UNSPSC | 41116105 |