2,3,5-Trimethylbenzoic acid

Data at NIST subscription sites:

NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.


Gas phase thermochemistry data

Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry 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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Δfgas-382.2 ± 1.8kJ/molCmColomina, Jimenez, et al., 1987see Colomina, Turrion, et al., 1964

Condensed phase thermochemistry data

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry 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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Δfsolid-488.9 ± 1.8kJ/molCmColomina, Jimenez, et al., 1987see Colomina, Turrion, et al., 1964
Quantity Value Units Method Reference Comment
Δcsolid-5161.2 ± 1.3kJ/molCmColomina, Jimenez, et al., 1987see Colomina, Turrion, et al., 1964; Corresponding Δfsolid = -488.87 kJ/mol (simple calculation by NIST; no Washburn corrections)

Phase change data

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry 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
Δsub106.7 ± 0.3kJ/molVColomina, Jimenez, et al., 1987see Colomina, Turrion, et al., 1964; ALS
Δsub106.7kJ/molN/AColomina, Jimenez, et al., 1987DRB
Δsub106.7 ± 0.3kJ/molMEColomina, Jimenez, et al., 1987Based on data from 320. - 338. K.; AC

Enthalpy of sublimation

ΔsubH (kJ/mol) Temperature (K) Method Reference Comment
105.7 ± 0.3329.MEColomina, Jimenez, et al., 1987Based on data from 320. - 338. K.; AC

Reaction thermochemistry data

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, 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

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

C10H11O2- + Hydrogen cation = 2,3,5-Trimethylbenzoic acid

By formula: C10H11O2- + H+ = C10H12O2

Quantity Value Units Method Reference Comment
Δr1390. ± 8.8kJ/molIMREDecouzon, Gal, et al., 1997gas phase

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction 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., 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, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, References