- InChI
- InChI=1S/K
- InChI Key
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N
- Formula
- K
- SMILES
- [K]
- Molecular Weight1
- 39.10
- CAS
- 7440-09-7
- ΔfH°gas : Enthalpy of formation at standard conditions (kJ/mol).
- IE : Ionization energy (eV).
- NFPA Fire : NFPA Fire Rating.
- NFPA Health : NFPA Health Rating.
- NFPA Safety : NFPA Safety Rating.
- Pvap : Vapor pressure (kPa).
- S°gas,1 bar : Molar entropy at standard conditions (1 bar) (J/mol×K).
- S°solid,1 bar : Solid phase molar entropy at standard conditions (J/mol×K).
- Tboil : Normal Boiling Point Temperature (K).
- Ttriple : Triple Point Temperature (K).
- 1: Molecular weight from the IUPAC atomic weights tables.
Physical Properties
| Property | Value | Unit | Source |
|---|---|---|---|
| ΔfH°gas | 89.00 ± 0.80 | kJ/mol | NIST |
| IE | [4.10; 4.50] | eV |
|
| IE | 4.34 ± 0.00 | eV | NIST |
| IE | 4.34 | eV | NIST |
| IE | 4.34 | eV | NIST |
| IE | 4.34 ± 0.00 | eV | NIST |
| IE | 4.50 ± 1.00 | eV | NIST |
| IE | 4.40 | eV | NIST |
| IE | Outlier 4.10 ± 0.30 | eV | NIST |
| IE | 4.34 | eV | NIST |
| IE | 4.34 | eV | NIST |
| NFPA Fire | 1 | KDB | |
| NFPA Health | 3 | KDB | |
| NFPA Safety | 2 | KDB | |
| S°gas,1 bar | 160.34 ± 0.00 | J/mol×K | NIST |
| S°solid,1 bar | 64.68 ± 0.20 | J/mol×K | NIST |
| Tboil | 1037.00 ± 1.00 | K | NIST |
| Ttriple | 336.35 ± 0.10 | K | NIST |
Cheméo can also estimate Normal melting (fusion) point, Critical Temperature, Critical Pressure, Critical Volume, Enthalpy of vaporization at standard conditions, Standard Gibbs free energy of formation, Acentric Factor, Log10 of Water solubility in mol/l for this compound, but they fall outside the models' validated range, so they are not shown here. Open the prediction tool to compute them on demand.
Correlations
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Pvap | [1.13e-07; 16569.18] | kPa | [336.35; 2223.00] |
The Yaws Handbook of Vapor Pressure
|
| Equation | ln(Pvp) = A + B/(T + C) | |||
| Coefficient A | 1.40440e+01 | |||
| Coefficient B | -9.54174e+03 | |||
| Coefficient C | -1.86800e+01 | |||
| Temperature range, min. | 336.35 | |||
| Temperature range, max. | 2223.00 | |||
| Pvap | 1.13e-07 | kPa | 336.35 | Calculated Property |
| Pvap | 0.02 | kPa | 545.98 | Calculated Property |
| Pvap | 2.99 | kPa | 755.61 | Calculated Property |
| Pvap | 52.64 | kPa | 965.23 | Calculated Property |
| Pvap | 327.39 | kPa | 1174.86 | Calculated Property |
| Pvap | 1161.89 | kPa | 1384.49 | Calculated Property |
| Pvap | 2943.59 | kPa | 1594.12 | Calculated Property |
| Pvap | 5994.72 | kPa | 1803.74 | Calculated Property |
| Pvap | 10513.22 | kPa | 2013.37 | Calculated Property |
| Pvap | 16569.18 | kPa | 2223.00 | Calculated Property |
Sources
- Cheméo Relay (1.0, beta) Beta: served but experimental, data-limited and below our cross-validation release bar; the Joback value is recommended where available.
- Low-Temperature Heat Capacities and Standard Molar Enthalpy of Formation of Potassium Benzoate C7H5O2K(s)
- A calorimetric and thermodynamic investigation of potassium uranyl tungstate K2[(UO2)(W2O8)]
- Thermochemical properties of two mixed alkali-alkaline earth metal borates as non-linear optical materials: NaSrBO3 and KSr4B3O9
- A calorimetric and thermodynamic investigation of A2[(UO2)2(MoO4)O2] compounds with A = K and Rb and calculated phase relations in the system (K2MoO4 + UO3 + H2O)
- Thermochemical properties of microporous materials for two borogermanates, .beta.-K2[B2Ge3O10] and NH4[BGe3O8]
- A calorimetric investigation of A2[(UO2)2(WO5)O] compounds with A = K, Rb and Cs and calculated phase relations in the K2WO4-UO3-H2O and K2MoO4-K2WO4-UO3-H2O systems
- Synthesis and energetics of Na, K, Rb and Cs salts by reaction with 1,2-ethanediol and 1,4-butanediol
- Thermochemistry of Potassium Strontium Tetraborate Decahydrated
- Low-Temperature Heat Capacities and Standard Molar Enthalpy of Formation of Potassium Hydrogen Phthalate C8H5KO4(s)
- KDB
- NIST Webbook
- The Yaws Handbook of Vapor Pressure
Note: Cheméo is only indexing the data, follow the source links to retrieve the latest data. The source is also providing more information like the publication year, authors and more.
Take the time to validate and double check the source of the data.
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