Octanoic acid
- Formula: C8H16O2
- Molecular weight: 144.2114
- IUPAC Standard InChI: InChI=1S/C8H16O2/c1-2-3-4-5-6-7-8(9)10/h2-7H2,1H3,(H,9,10)
- IUPAC Standard InChIKey: WWZKQHOCKIZLMA-UHFFFAOYSA-N
- CAS Registry Number: 124-07-2
- 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-Caprylic acid; n-Octanoic acid; n-Octoic acid; n-Octylic acid; Neo-Fat 8; Caprylic acid; Enantic acid; Octylic acid; 1-Heptanecarboxylic acid; Heptane-1-carboxylic acid; Octic acid; Hexacid 898; C-8 Acid; Kyselina kaprylova; Lunac 8-95; Emery 657; Octoic acid; Prifac 2901; 1-Octanoic acid; NSC 5024; Prifrac 2901
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Gas 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 by: Donald R. Burgess, Jr.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -132.5 ± 0.31 | kcal/mol | Ccb | Adriaanse, Dekker, et al., 1965 | Value computed using ΔfHliquid° from Adriaanse, Dekker, et al., 1965 and ΔvapH° value of 19.2 kcal/mol from Baccanari, Novinski, et al., 1968. estimated uncertainty |
| ΔfH°gas | -133.0 | kcal/mol | N/A | Lebedeva, 1964 | Value computed using ΔfHliquid° value of -636.89±0.54 kj/mol from Lebedeva, 1964 and ΔvapH° value of 80.3 kj/mol from missing citation. |
| ΔfH°gas | -132.4 ± 0.26 | kcal/mol | N/A | Lebedeva, 1964 | Value computed using ΔfHliquid° value of -636.89±0.54 kj/mol from Lebedeva, 1964 and ΔvapH° value of 82.9±1 kj/mol from missing citation. |
| ΔfH°gas | -133.0 ± 0.26 | kcal/mol | Ccb | Lebedeva, 1964 | Value computed using ΔfHliquid° from Lebedeva, 1964 and ΔvapH° value of 19.2 kcal/mol from Baccanari, Novinski, et al., 1968. estimated uncertainty |
References
Go To: Top, Gas 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]
Baccanari, Novinski, et al., 1968
Baccanari, D.P.; Novinski, J.A.; Pan, Y.; Yevitz, M.M.; Swain, H.A., Jr.,
Heats of sublimation and vaporization at 25° of long chain fatty acids and methyl esters,
Trans. Faraday Soc., 1968, 64, 1201. [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]
Notes
Go To: Top, Gas phase thermochemistry data, References
- Symbols used in this document:
ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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