2,3,6-Trimethylbenzoic 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Δfgas-371.2 ± 1.9kJ/molCmColomina, Jimenez, et al., 1987see Colomina, Turrion, et al., 1964 and Colomina, Perez-Ossorio, et al., 1960

Condensed 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Δfsolid-475.6 ± 1.9kJ/molCmColomina, Jimenez, et al., 1987see Colomina, Turrion, et al., 1964 and Colomina, Perez-Ossorio, et al., 1960
Quantity Value Units Method Reference Comment
Δcsolid-5174.52 ± 0.84kJ/molCmColomina, Jimenez, et al., 1987see Colomina, Turrion, et al., 1964 and Colomina, Perez-Ossorio, et al., 1960; Corresponding Δfsolid = -475.56 kJ/mol (simple calculation by NIST; no Washburn corrections)

Phase change 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.
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Δsub104.4 ± 0.2kJ/molVColomina, Jimenez, et al., 1987see Colomina, Turrion, et al., 1964 and Colomina, Perez-Ossorio, et al., 1960; ALS
Δsub104.4kJ/molN/AColomina, Jimenez, et al., 1987DRB
Δsub104.4 ± 0.2kJ/molMEColomina, Jimenez, et al., 1987Based on data from 314. to 336. K.; AC

Enthalpy of sublimation

ΔsubH (kJ/mol) Temperature (K) Method Reference Comment
103.6 ± 0.2325.MEColomina, Jimenez, et al., 1987Based on data from 314. to 336. K.; AC

Gas Chromatography

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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 by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Normal alkane RI, non-polar column, temperature ramp

View large format table.

Column type Active phase I Reference Comment
CapillaryUltra-11402.Okumura, 199125. m/0.32 mm/0.25 μm, He, 3. K/min; Tstart: 80. C; Tend: 260. C

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Gas Chromatography, 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]

Colomina, Perez-Ossorio, et al., 1960
Colomina, M.; Perez-Ossorio, R.; Boned, M.L.; Panea, M.; Turrion, C., Thermochemical investigations on methylsubstituted benzoic acid, Rpt. for the US. Dept. of the Army, European Research Office contract no. DA-91-591-EUC-1364-OI-4291-60 by Instituto de Quimica Fisica Madrid, Spain, 1960, 1-38. [all data]

Okumura, 1991
Okumura, T., retention indices of environmental chemicals on methyl silicone capillary column, Journal of Environmental Chemistry (Japan), 1991, 1, 2, 333-358, https://doi.org/10.5985/jec.1.333 . [all data]


Notes

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