potassium propionate
- Formula: C3H5KO2
- Molecular weight: 112.1689
- IUPAC Standard InChI: InChI=1S/C3H6O2.K/c1-2-3(4)5;/h2H2,1H3,(H,4,5);/q;+1/p-1
- IUPAC Standard InChIKey: BWILYWWHXDGKQA-UHFFFAOYSA-M
- CAS Registry Number: 327-62-8
- Chemical structure:
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Condensed phase thermochemistry data
Go To: Top, Phase change data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| S°solid,1 bar | 142.4 | J/mol*K | N/A | Franzosini and Westrum, 1984 |
Constant pressure heat capacity of solid
| Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 129.5 | 298.15 | Franzosini and Westrum, 1984 | T = 10 to 340 K. |
Phase change data
Go To: Top, Condensed phase thermochemistry data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
DH - Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tfus | 638.3 | K | N/A | Ferloni, Sanesi, et al., 1975 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.1 K; TRC |
| Quantity | Value | Units | Method | Reference | Comment |
| Ttriple | 638.3 | K | N/A | Franzosini and Westrum, 1984, 2 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.1 K; TRC |
Temperature of phase transition
| Ttrs (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|
| 372.5 | crystaline, II | crystaline, I | Franzosini and Westrum, 1984 | DH |
| 638.3 | crystaline, I | liquid | Franzosini and Westrum, 1984 | DH |
Enthalpy of phase transition
| ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 0.515 | 255. | crystaline, III | crystaline, II | Franzosini and Westrum, 1984 | DH |
| 0.330 | 258. | crystaline, III | crystaline, II | Ferloni, Sanesi, et al., 1975, 2 | DH |
| 1.715 | 352.5 | crystaline, II | crystaline, I | Ferloni, Sanesi, et al., 1975, 2 | DH |
| 20.125 | 638.3 | crystaline, I | liquid | Ferloni, Sanesi, et al., 1975, 2 | DH |
Entropy of phase transition
| ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 2.02 | 255. | crystaline, III | crystaline, II | Franzosini and Westrum, 1984 | DH |
| 1.3 | 258. | crystaline, III | crystaline, II | Ferloni, Sanesi, et al., 1975, 2 | DH |
| 4.9 | 352.5 | crystaline, II | crystaline, I | Ferloni, Sanesi, et al., 1975, 2 | DH |
| 31.5 | 638.3 | crystaline, I | liquid | Ferloni, Sanesi, et al., 1975, 2 | DH |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Franzosini and Westrum, 1984
Franzosini, P.; Westrum, E.F.,
Jr., Thermophysics of metal alkanoates. III. Heat capacities and thermodynamic properties of lithium and potassium propanoates,
J. Chem. Thermodynam., 1984, 16, 81-90. [all data]
Ferloni, Sanesi, et al., 1975
Ferloni, P.; Sanesi, M.; Franzosini, P.,
Phase transitions in the alkali C1-n.C4 alkanoates,
Z. Naturforsch., A: Phys., Phys. Chem., Kosmophys., 1975, 30, 1447-57. [all data]
Franzosini and Westrum, 1984, 2
Franzosini, P.; Westrum, E.F.,
Thermophysics of metal alkanoates III. Heat capacities and thermodynamic properties of lithium and potassium propanoates,
J. Chem. Thermodyn., 1984, 16, 81. [all data]
Ferloni, Sanesi, et al., 1975, 2
Ferloni, P.; Sanesi, M.; Franzosini, P.; C4 alkanoates, Phase transitions in the alkali C1-n.,
Z. Naturforsch. 30a, 1975, 1447-1454. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid S°solid,1 bar Entropy of solid at standard conditions (1 bar) Tfus Fusion (melting) point Ttriple Triple point temperature Ttrs Temperature of phase transition ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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