Pentanoic acid
- Formula: C5H10O2
- Molecular weight: 102.1317
- IUPAC Standard InChIKey: NQPDZGIKBAWPEJ-UHFFFAOYSA-N
- CAS Registry Number: 109-52-4
- 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: Valeric acid; n-Pentanoic acid; n-Valeric acid; Propylacetic acid; Valerianic acid; 1-Butanecarboxylic acid; n-C4H9COOH; Butanecarboxylic acid; Kyselina valerova; Valeric acid, normal; 1-Pentanoic acid; NSC 406833; Valeric acid, n-; NA 1760
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Enthalpy of vaporization at standard conditions (nominally 298.15 K, 1 atm.)
Go To: Top, 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:
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
ΔvapH° (kJ/mol) | Method | Reference | Comment |
---|---|---|---|
63.0 ± 9.5 | GS | Verevkin, 2000 | Based on data from 283. to 313. K.; AC |
65.9 | CGC | Chickos, Hosseini, et al., 1995 | Based on data from 353. to 393. K.; AC |
62. ± 3. | TE | Kruif and Oonk, 1979 | Based on data from 243. to 266. K.; AC |
62.4 ± 3.0 | V | Kruif and Oonk, 1979 | ALS |
69.274 | C | McDougall and Kilpatrick, 1965 | ALS |
65.4 ± 2.5 | N/A | N/A | n-alkanoic correlation; DRB |
References
Go To: Top, Enthalpy of vaporization at standard conditions (nominally 298.15 K, 1 atm.), Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Verevkin, 2000
Verevkin, S.P.,
Measurement and Prediction of the Monocarboxylic Acids Thermochemical Properties,
J. Chem. Eng. Data, 2000, 45, 5, 953-960, https://doi.org/10.1021/je990282m
. [all data]
Chickos, Hosseini, et al., 1995
Chickos, James S.; Hosseini, Sarah; Hesse, Donald G.,
Determination of vaporization enthalpies of simple organic molecules by correlations of changes in gas chromatographic net retention times,
Thermochimica Acta, 1995, 249, 41-62, https://doi.org/10.1016/0040-6031(95)90670-3
. [all data]
Kruif and Oonk, 1979
Kruif, C.G.; Oonk, H.A.J.,
Enthalpies of vaporization and vapour pressures of seven aliphatic carboxylic acids,
J. Chem. Thermodyn., 1979, 11, 287-290. [all data]
McDougall and Kilpatrick, 1965
McDougall, L.A.; Kilpatrick, J.E.,
Entropy and related thermodynamic properties of n-valeric acid,
J. Chem. Phys., 1965, 42, 2307. [all data]
Notes
Go To: Top, Enthalpy of vaporization at standard conditions (nominally 298.15 K, 1 atm.), References
- Symbols used in this document:
ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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