Undecanoic acid
- Formula: C11H22O2
- Molecular weight: 186.2912
- IUPAC Standard InChI: InChI=1S/C11H22O2/c1-2-3-4-5-6-7-8-9-10-11(12)13/h2-10H2,1H3,(H,12,13)
- IUPAC Standard InChIKey: ZDPHROOEEOARMN-UHFFFAOYSA-N
- CAS Registry Number: 112-37-8
- 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: n-Undecanoic acid; n-Undecoic acid; n-Undecylic acid; Hendecanoic acid; Undecylic acid; 1-Decanecarboxylic 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
DH - Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔcH°liquid | -6736.5 ± 0.9 | kJ/mol | Ccb | Adriaanse, Dekker, et al., 1965 | Hfusion=25.8 kJ/mol; Corresponding ΔfHºliquid = -736.2 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
Constant pressure heat capacity of solid
| Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 768.8 | 298.15 | Schaake, van Miltenburg, et al., 1982 | T = 80 to 330 K.; DH |
| 415.1 | 293. | Garner and Randall, 1924 | crystaline, I phase; T = 0 to 66°C. Mean value 14 to 21°C.; 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.
Adriaanse, Dekker, et al., 1965
Adriaanse, N.; Dekker, H.; Coops, J.,
Heats of combustion of normal saturated fatty acids and their methyl esters,
Rec. Trav. Chim. Pays/Bas, 1965, 84, 393-407. [all data]
Schaake, van Miltenburg, et al., 1982
Schaake, R.C.F.; van Miltenburg, J.C.; De Kruif, C.G.,
Thermodynamic properties of the normal alkanoic acids. I. Molar heat capacities of seven odd-numbered normal alkanoic acids,
J. Chem. Thermodynam., 1982, 14, 763-769. [all data]
Garner and Randall, 1924
Garner, W.E.; Randall, F.C.,
Alternation in the heats of crystallization of the normal monobasic fatty acids. Part I.,
J. Chem. Soc., 1924, 125, 881-896. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid ΔcH°liquid Enthalpy of combustion of liquid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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