Benzoic acid, 3,4-dimethyl-
- Formula: C9H10O2
- Molecular weight: 150.1745
- IUPAC Standard InChI: InChI=1S/C9H10O2/c1-6-3-4-8(9(10)11)5-7(6)2/h3-5H,1-2H3,(H,10,11)
- IUPAC Standard InChIKey: OPVAJFQBSDUNQA-UHFFFAOYSA-N
- CAS Registry Number: 619-04-5
- 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: 1-Carboxy-3,4-dimethylbenzene; 3,4-Dimethylbenzoic acid
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Gas 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.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -362.4 ± 1.7 | kJ/mol | Ccb | Colomina, Jimenez, et al., 1984 | see Colomina, Perez-Ossorio, et al., 1961 and Colomina, Perez Ossorio, et al., 1959; ALS |
| ΔfH°gas | -362.4 | kJ/mol | N/A | Corral, 1960 | Value computed using ΔfHsolid° value of -468.8±1.3 kj/mol from Corral, 1960 and ΔsubH° value of 106.4 kj/mol from Colomina, Jimenez, et al., 1984.; DRB |
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.
Colomina, Jimenez, et al., 1984
Colomina, M.; Jimenez, P.; Roux, M.V.; Turrion, C.,
Thermochemical properties of benzoic acid derivatives. XI. Vapour pressures and enthalpies of sublimation and formation of the six dimethylbenzoic acids,
J. Chem. Thermodyn., 1984, 16, 1121-1127. [all data]
Colomina, Perez-Ossorio, et al., 1961
Colomina, M.; Perez-Ossorio, R.; Boned, M.L.; Panea, M.; Turrion, C.,
Investigaciones termoquimicas sobre los acidos alquilbenzoicos. II. Acidos dimetrilbenzoicos,
Anal. Fisc. Quim. B, 1961, 57, 665-672. [all data]
Colomina, Perez Ossorio, et al., 1959
Colomina, M.; Perez Ossorio, R.; Boned, M.L.; Panea, M.; Turrion, C.,
Thermochemical investigations on methylsubstituted benzoic acids, Rpt. for the U.S. Dept. of the Army, European Research Office contract no. DA-91-508-EUC-358 by Instituto de Quimica Fisica Madrid, Spain, 1959, 1-36. [all data]
Corral, 1960
Corral, L.B.,
Investigaciones termoquimicas sobre los acidos toluicos y dimetilbenzoicos,
Rev. R. Acad. Cienc., 1960, 54, 365-403. [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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