Potassium phosphate monobasic
SIAL/NIST2186I - NIST® SRM® 2186I
Synonym: Monopotassium phosphate; Potassium dihydrogen phosphate; prim.-Potassium phosphate
CAS Number: 7778-77-0
Empirical Formula (Hill Notation): H2KO4P
Molecular Weight: 136.09
MDL Number: MFCD00011401
Linear Formula: KH2PO4
Product Type: Chemical
| agency | NIST standard reference material |
| application(s) | general analytical |
| density | 2.338 g/mL at 25 °C (lit.) |
| format | neat |
| grade | certified reference material |
| InChI | 1S/K.H3O4P/c;1-5(2,3)4/h; |
| InChI key | GNSKLFRGEWLPPA-UHFFFAOYSA |
| manufacturer/tradename | NIST® |
| mp | 252.6 °C (lit.) |
| packaging | pkg of 30 g |
| pKa (25 °C) | (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid) |
| Quality Level | 100  |
| SMILES string | [K+].OP(O)([O-])=O |
| Application: | SRM 2186I solution is recommended for the calibration of pH meters to use for the measurement of pD in deuterium oxide. |
| General description: | SRM 2186I is certified as a pH standard for pD(S) determination. SRM 2186I _SDS  SRM 2186I _CoA |
| Legal Information: | NIST is a registered trademark of National Institute of Standards and Technology |
| Legal Information: | SRM is a registered trademark of National Institute of Standards and Technology |
| Other Notes: | Certified for the analytes listed below. Potassium Dihydrogen Phosphate See certificate for values and more details at nist.gov/SRM. |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| mp | 252.6 °C (lit.) |
| Density | 2.338 g/mL at 25 °C (lit.) |
| UNSPSC | 12352302 |