Benzoic acid, 4-methyl-
- Formula: C8H8O2
- Molecular weight: 136.1479
- IUPAC Standard InChI: InChI=1S/C8H8O2/c1-6-2-4-7(5-3-6)8(9)10/h2-5H,1H3,(H,9,10)
- IUPAC Standard InChIKey: LPNBBFKOUUSUDB-UHFFFAOYSA-N
- CAS Registry Number: 99-94-5
- 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: p-Toluic acid; p-Methylbenzoic acid; p-Toluylic acid; Crithminic acid; 4-Methylbenzoic acid; 4-Toluic acid; para-Toluic acid; NSC 2215; p-Carboxytoluene; p-Tolylcarboxylic acid
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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 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 | -330.4 ± 1.5 | kJ/mol | Ccb | Colomina, Jimenez, et al., 1986 | see Colomina, Boned, et al., 1961; ALS |
| ΔfH°gas | -330.4 | kJ/mol | N/A | Corral, 1960 | Value computed using ΔfHsolid° value of -429.2±1.1 kj/mol from Corral, 1960 and ΔsubH° value of 98.8 kj/mol from Colomina, Jimenez, et al., 1986.; DRB |
| ΔfH°gas | -324.5 | kJ/mol | N/A | Breitenbach and Derkosch, 1951 | Value computed using ΔfHsolid° value of -423.3±3.8 kj/mol from Breitenbach and Derkosch, 1951 and ΔsubH° value of 98.8 kj/mol from Colomina, Jimenez, et al., 1986.; 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., 1986
Colomina, M.; Jimenez, P.; Roux, M.V.; Turrion, C.,
Propiedades termoquimicas de derivados del acido benzoico. XIII. Presiones de vapor y entalpias de sublimacion y formacion de los acidos toluicos,
An. Quim., 1986, 82, 126-130. [all data]
Colomina, Boned, et al., 1961
Colomina, M.; Boned, M.L.; Turrion, C.,
Investigaciones termoquimicas sobre los acidos alquilbenzoicos. I. Acidos toluicos,
An. Fis. Quim., 1961, 57, 655-664. [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]
Breitenbach and Derkosch, 1951
Breitenbach, J.W.; Derkosch, J.,
Verbrennungswarmen von peroxyden und verwandten verbindungen sowie von polystrolen,
Monatsh. Chem., 1951, 82, 177-179. [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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