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Molecule
Monopotassium Phosphate
CAS: 7778-77-0 · H3KO4P
2D Structure
3D Structure
Loading 3D structure...
Basic Information
- CAS Registry Number
- 7778-77-0
- Molecular Formula
- H3KO4P
- Molecular Mass
- 137.09 g/mol
Identifiers
CAS Registry Number
7778-77-0
SMILES
O=P(O)(O)O.[K]
InChI Key
PJNZPQUBCPKICU-UHFFFAOYSA-N
InChI
InChI=1S/K.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)
Names and Synonyms
- Monopotassium Phosphate Common Name
- Phosphoric acid, potassium salt (1:1) Synonym
- Phosphoric acid, monopotassium salt Synonym
- Monopotassium phosphate Synonym
- Potassium acid phosphate Synonym
- Potassium biphosphate Synonym
- Potassium dihydrogen phosphate Synonym
- Sorensen's potassium phosphate Synonym
- Monopotassium orthophosphate Synonym
- Potassium phosphate (K(H2PO4)) Synonym
- Potassium dihydrogen phosphate (KH2PO4) Synonym
- KDP Synonym
- Monobasic potassium phosphate Synonym
- Monopotassium dihydrogen phosphate Synonym
- Dihydrogen potassium phosphate Synonym
- Potassium dihydrogen orthophosphate Synonym
- Potassium hydrogen phosphate (KH2PO4) Synonym
- Potassium diphosphate Synonym
- Potassium monobasic phosphate (KH2PO4) Synonym
- Potassium phosphate monobasic Synonym
- Nutri-Vant-PeaK Synonym
- Monopotassium dihydrogen orthophosphate Synonym
- MKP Synonym
- Hydrogen potassium phosphate (H2KPO4) Synonym
All Properties
Comprehensive physical and chemical properties
| Property | Value | Source |
|---|---|---|
| Molecular Mass | 137.09 g/mol | CAS Common Chemistry |
| 137.09199999999998 g/mol | RDKit | |
| 137.092 g/mol | RDKit | |
| 138.1 g/mol | chempirical lib | |
| Density | 2.34 g/cm³ | CAS Common Chemistry |
| 2.34 g/cm3 | CAS Common Chemistry | |
| Wikipedia Url | https://en.wikipedia.org/wiki/Monopotassium_phosphate | CAS Common Chemistry |
| Canonical SMILES | [K].O=P(O)(O)O | CAS Common Chemistry |
| InChI | InChI=1S/K.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4) | CAS Common Chemistry |
| InChI Key | InChIKey=PJNZPQUBCPKICU-UHFFFAOYSA-N | CAS Common Chemistry |
| Melting Point | 253 °C | CAS Common Chemistry |
| Name | Monopotassium phosphate | CAS Common Chemistry |
| Heavy Atom Count | 6 | RDKit |
| Hydrogen Bond Acceptors | 1 | RDKit |
| Hydrogen Bond Donors | 3 | RDKit |
| Rotatable Bonds | 0 | RDKit |
| Aromatic Ring Count | 0 | RDKit |
| Topological Polar Surface Area | 77.76 Ų | RDKit |
| LogP | -1.3094000000000001 | RDKit |
| -1.3094 | RDKit | |
| Molar Refractivity | 20.0169 cm³/mol | RDKit |
| Ring Count | 0 | RDKit |
| Formal Charge | 0 | RDKit |
| Fraction Csp3 | 0.0 | RDKit |
| Exact Mass | 136.940601886 g/mol | RDKit |
Spectral Data
NMR, IR, and Mass spectral data
Predicting NMR spectra...
10 ppm
9
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7
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5
4
3
2
1
0 ppm
| Shift (ppm) | Multiplicity | Integration | Assignment |
|---|
200 ppm
180
160
140
120
100
80
60
40
20
0 ppm
| Shift (ppm) | DEPT | Assignment |
|---|
Note: These NMR spectra are predicted computationally and may differ from experimental data. Predictions are based on chemical environment analysis.
External Resources
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MW = 137.09 g/mol; density = 2.340 g/mL. Edit any field — others recompute live.
