Nonanoic acid
- Formula: C9H18O2
- Molecular weight: 158.2380
- IUPAC Standard InChI: InChI=1S/C9H18O2/c1-2-3-4-5-6-7-8-9(10)11/h2-8H2,1H3,(H,10,11)
- IUPAC Standard InChIKey: FBUKVWPVBMHYJY-UHFFFAOYSA-N
- CAS Registry Number: 112-05-0
- 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-Nonanoic acid; n-Nonoic acid; n-Nonylic acid; Nonoic acid; Nonylic acid; Pelargic acid; Pelargonic acid; 1-Octanecarboxylic acid; Cirrasol 185a; Emfac 1202; Hexacid C-9; Pelargon; Emery 1203; 1-Nonanoic acid; NSC 62787; n-Pelargonic acid; Emery 1202 (Salt/Mix)
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Condensed phase thermochemistry data
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:
DRB - Donald R. Burgess, Jr.
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 |
|---|---|---|---|---|---|
| ΔfH°liquid | -157.3 ± 0.2 | kcal/mol | Ccb | Adriaanse, Dekker, et al., 1965 | DRB |
| ΔfH°liquid | -158.20 ± 0.23 | kcal/mol | Ccb | Lebedeva, 1964 | ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°liquid | -1304.0 ± 0.2 | kcal/mol | Ccb | Adriaanse, Dekker, et al., 1965 | Corresponding ΔfHºliquid = -157.3 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
| ΔcH°liquid | -1303.12 ± 0.23 | kcal/mol | Ccb | Lebedeva, 1964 | Corresponding ΔfHºliquid = -158.18 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
Constant pressure heat capacity of liquid
| Cp,liquid (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 86.609 | 298.15 | Schaake, van Miltenburg, et al., 1982 | T = 80 to 310 K.; DH |
| 79.80 | 304. | Garner and Randall, 1924 | T = -9 to 44°C. Mean value 18 to 44°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]
Lebedeva, 1964
Lebedeva, N.D.,
Heats of combustion of monocarboxylic acids,
Russ. J. Phys. Chem. (Engl. Transl.), 1964, 38, 1435-1437. [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,liquid Constant pressure heat capacity of liquid 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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