Benzoic acid, 2,4,5-trimethyl-
- Formula: C10H12O2
- Molecular weight: 164.2011
- IUPAC Standard InChIKey: QENJZWZWAWWESF-UHFFFAOYSA-N
- CAS Registry Number: 528-90-5
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Durylic acid; 2,4,5-Trimethylbenzoic acid
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Phase change data
Go To: Top, Gas phase ion energetics data, 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.
AC - William E. Acree, Jr., James S. Chickos
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔsubH° | 109.6 ± 0.5 | kJ/mol | V | Colomina, Jimenez, et al., 1987 | see Colomina, Turrion, et al., 1964; ALS |
ΔsubH° | 109.6 | kJ/mol | N/A | Colomina, Jimenez, et al., 1987 | DRB |
ΔsubH° | 109.6 ± 0.5 | kJ/mol | ME | Colomina, Jimenez, et al., 1987 | Based on data from 324. to 346. K.; AC |
Enthalpy of sublimation
ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
108.3 ± 0.5 | 335. | ME | Colomina, Jimenez, et al., 1987 | Based on data from 324. to 346. K.; AC |
Gas phase ion energetics data
Go To: Top, Phase change data, 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: John E. Bartmess
De-protonation reactions
C10H11O2- + =
By formula: C10H11O2- + H+ = C10H12O2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrG° | 1393. ± 8.8 | kJ/mol | IMRE | Decouzon, Gal, et al., 1997 | gas phase |
References
Go To: Top, Phase change data, Gas phase ion energetics 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., 1987
Colomina, M.; Jimenez, P.; Roux, M.V.; Turrion, C.,
Thermochemical properties of benzoic acid derivatives. XV. Vapour pressures and enthalpies of sublimation and formation of the six trimethylbenzoic acids,
J. Chem. Thermodyn., 1987, 19, 1139-1144. [all data]
Colomina, Turrion, et al., 1964
Colomina, M.; Turrion, C.; Boned, M.L.; Panea, M.,
Investigaciones termoquimicas sobre los acidos alquilbenzoicos. III. Acidos trimetilbenzoicos,
Anal. Fisc. Quim. B, 1964, 60, 619-626. [all data]
Decouzon, Gal, et al., 1997
Decouzon, M.; Gal, J.-F.; Maria, P.-C.; Bohm, S.; Jimenez, P.; Roux, M.V.; Exner, O.,
Steric Effects in Crowded Molecules in the Gas Phase: Polymethyl Substituted Benzoic Acids,
New J. Chem., 1997, 21, 561. [all data]
Notes
Go To: Top, Phase change data, Gas phase ion energetics data, References
- Symbols used in this document:
ΔrG° Free energy of reaction at standard conditions ΔsubH Enthalpy of sublimation ΔsubH° Enthalpy of sublimation at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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