Propanoic acid
- Formula: C3H6O2
- Molecular weight: 74.0785
- IUPAC Standard InChI: InChI=1S/C3H6O2/c1-2-3(4)5/h2H2,1H3,(H,4,5)
- IUPAC Standard InChIKey: XBDQKXXYIPTUBI-UHFFFAOYSA-N
- CAS Registry Number: 79-09-4
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Propionic acid; Carboxyethane; Ethanecarboxylic acid; Ethylformic acid; Luprisol; Luprosil; Metacetonic acid; Prozoin; Pseudoacetic acid; C2H5COOH; Methylacetic acid; Acide propionique; Kyselina propionova; Propionic acid grain preserver; Sentry grain preserver; Tenox P grain preservative; UN 1848; MonoProp; Antischim B; Propkorn; Propcorn; n-Propionic acid
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Condensed phase thermochemistry data
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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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
DH - Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°liquid | -510.8 ± 0.1 | kJ/mol | Ccb | Lebedeva, 1964 | ALS |
| ΔfH°liquid | -510.0 ± 2.5 | kJ/mol | Ccb | Schjanberg, 1935 | estimated uncertainty; DRB |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°liquid | -1527.3 ± 0.1 | kJ/mol | Ccb | Lebedeva, 1964 | Corresponding ΔfHºliquid = -510.74 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
| ΔcH°liquid | -1528. | kJ/mol | Ccb | Schjanberg, 1935 | Corresponding ΔfHºliquid = -510.0 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| S°liquid | 191.0 | J/mol*K | N/A | Martin and Andon, 1982 | DH |
Constant pressure heat capacity of liquid
| Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 158.6 | 298.15 | Biros, Sikora, et al., 1982 | T = 270 to 370 K. Equation only. Cp = 129.7 - 0.1263 T + 0.0007486 T2 J/mol*K.; DH |
| 152.8 | 298.15 | Martin and Andon, 1982 | T = 13 to 450 K. Data also given by equation.; DH |
| 154.6 | 333.15 | Woycicka and Kalinowska, 1978 | DH |
| 151. | 298.15 | Konicek and Wadso, 1971 | DH |
| 159.4 | 289. | Radulescu and Jula, 1934 | DH |
References
Go To: Top, Condensed phase thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Lebedeva, 1964
Lebedeva, N.D.,
Heats of combustion of monocarboxylic acids,
Russ. J. Phys. Chem. (Engl. Transl.), 1964, 38, 1435-1437. [all data]
Schjanberg, 1935
Schjanberg, E.,
Die Verbrennungswarmen und die Refraktionsdaten einiger chlorsubstituierter Fettsauren und Ester.,
Z. Phys. Chem. Abt. A, 1935, 172, 197-233. [all data]
Martin and Andon, 1982
Martin, J.F.; Andon, R.J.L.,
Thermodynamic properties of organic oxygen compounds. Part LII. Molar heat capacity of ethanoic, propanoic, and butanoic acids,
J. Chem. Thermodynam., 1982, 14, 679-688. [all data]
Biros, Sikora, et al., 1982
Biros, J.; Sikora, A.; Zivny, A.; Pouchly, J.,
Heat capacity of monomer models of some hydrophilic polymers in aqueous solution from 20° to 60°C,
Collect Czech. Chem. Commun., 1982, 47(10), 2692-2701. [all data]
Woycicka and Kalinowska, 1978
Woycicka, M.; Kalinowska, B.,
Excess entahlpy and heat capacities of diluted propionic acid solutions in n-heptane, Bull. Acad. Pol. Sci.,
Ser. Sci. Chim., 1978, 26, 371-375. [all data]
Konicek and Wadso, 1971
Konicek, J.; Wadso, I.,
Thermochemical properties of some carboxylic acids, amines and N-substituted amides in aqueous solution,
Acta Chem. Scand., 1971, 25, 1541-1551. [all data]
Radulescu and Jula, 1934
Radulescu, D.; Jula, O.,
Beiträge zur Bestimmung der Abstufung der Polarität des Aminstickstoffes in den organischen Verbindungen,
Z. Phys. Chem., 1934, B26, 390-393. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid S°liquid Entropy of liquid at standard conditions ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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