p-Cymene

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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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Δfliquid-78.0 ± 1.1kJ/molCcbGood, 1973ALS
Δfliquid-78.4 ± 2.1kJ/molCcbProsen, Johnson, et al., 1946ALS
Quantity Value Units Method Reference Comment
Δcliquid-5857.9 ± 1.0kJ/molCcbGood, 1973Corresponding Δfliquid = -78.03 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Δcliquid-5857.6 ± 2.2kJ/molCcbProsen, Johnson, et al., 1946Corresponding Δfliquid = -78.28 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Quantity Value Units Method Reference Comment
liquid306.7J/mol*KN/AHuffman, Parks, et al., 1931Extrapolation below 90 K, 80.00 J/mol*K.; DH

Constant pressure heat capacity of liquid

Cp,liquid (J/mol*K) Temperature (K) Reference Comment
242.3298.Kurbatov, 1947T = 10 to 166°C, mean Cp, four temperatures.; DH
236.4297.1Huffman, Parks, et al., 1931T = 92 to 297 K. Value is unsmoothed experimental datum.; DH

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:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Tboil450. ± 1.KAVGN/AAverage of 50 out of 52 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus204. ± 3.KAVGN/AAverage of 12 values; Individual data points
Quantity Value Units Method Reference Comment
Ttriple204.2KN/AHuffman, Parks, et al., 1931, 2Uncertainty assigned by TRC = 0.3 K; TRC
Quantity Value Units Method Reference Comment
Tc652.KN/ATsonopoulos and Ambrose, 1995 
Tc658.30KN/ABrown, 1906Uncertainty assigned by TRC = 6. K; TRC
Tc651.8KN/AAltschul, 1893Uncertainty assigned by TRC = 2. K; TRC
Quantity Value Units Method Reference Comment
Pc28.barN/ATsonopoulos and Ambrose, 1995 
Pc28.00barN/AAltschul, 1893Uncertainty assigned by TRC = 0.0588 bar; TRC
Quantity Value Units Method Reference Comment
Δvap49.2kJ/molGCHoskovec, Grygarová, et al., 2005Based on data from 333. to 443. K.; AC
Δvap48.9kJ/molN/ARu«7825»icka, Zábranský, et al., 1994AC
Δvap50.3kJ/molN/AReid, 1972AC

Enthalpy of vaporization

ΔvapH (kJ/mol) Temperature (K) Method Reference Comment
44.0395.AStephenson and Malanowski, 1987Based on data from 380. to 452. K. See also McDonald, Shrader, et al., 1959 and Boublik, Fried, et al., 1984.; AC

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

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Temperature (K) A B C Reference
380.19 to 451.574.162141599.29-65.491McDonald, Shrader, et al., 1959

Enthalpy of fusion

ΔfusH (kJ/mol) Temperature (K) Reference Comment
9.67204.2Domalski and Hearing, 1996AC
9.661204.2Huffman, Parks, et al., 1931DH

Entropy of fusion

ΔfusS (J/mol*K) Temperature (K) Reference Comment
47.3204.2Huffman, Parks, et al., 1931DH

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


Reaction 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

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

p-Cymene = Benzene, 1-methyl-3-(1-methylethyl)-

By formula: C10H14 = C10H14

Quantity Value Units Method Reference Comment
Δr0.0 ± 0.63kJ/molEqkTsvetkov, Rozhnov, et al., 1985liquid phase

Gas phase ion energetics 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: Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard

Ionization energy determinations

IE (eV) Method Reference Comment
8.29PEHowell, Goncalves, et al., 1984 
8.29PEHowell, Goncalves, et al., 1984Vertical value

References

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

Good, 1973
Good, W.D., The enthalpies of combustion and formation of n-butylbenzene, the diethylbenzenes, the methyl-n-propylbenzenes, and the methyl-iso-propylbenzenes, J. Chem. Thermodyn., 1973, 5, 707-714. [all data]

Prosen, Johnson, et al., 1946
Prosen, E.J.; Johnson, W.H.; Rossini, F.D., Heats of combustion and formation at 25°C of the alkylbenzenes through C10H14, and of the higher normal monoalkylbenzenes, J. Res. NBS, 1946, 36, 455-461. [all data]

Huffman, Parks, et al., 1931
Huffman, H.M.; Parks, G.S.; Barmore, M., Thermal data on organic compounds. X. Further studies on the heat capacities, entropies and free energies of hydrocarbons, J. Am. Chem. Soc., 1931, 53, 3876-3888. [all data]

Kurbatov, 1947
Kurbatov, V.Ya., Specific heat of liquids. I. Specific heat of benzenoid hydrocarbons, Zhur. Obshch. Khim., 1947, 17, 1999-2003. [all data]

Huffman, Parks, et al., 1931, 2
Huffman, H.M.; Parks, G.S.; Barmore, M., Thermal Data on Organic Compounds X. Further Studies on the Heat Capacities, Entropies, and Free Energies of Hydrocarbons, J. Am. Chem. Soc., 1931, 53, 3876-88. [all data]

Tsonopoulos and Ambrose, 1995
Tsonopoulos, C.; Ambrose, D., Vapor-Liquid Critical Properties of Elements and Compounds. 3. Aromatic Hydrocarbons, J. Chem. Eng. Data, 1995, 40, 547-558. [all data]

Brown, 1906
Brown, J.C., The critical temperature and value of ml/theta of some carbon compounds, J. Chem. Soc., Trans., 1906, 89, 311. [all data]

Altschul, 1893
Altschul, M., The critical values of some organic compounds, Z. Phys. Chem., Stoechiom. Verwandtschaftsl., 1893, 11, 577. [all data]

Hoskovec, Grygarová, et al., 2005
Hoskovec, Michal; Grygarová, Dana; Cvacka, Josef; Streinz, Ludvík; Zima, Jirí; Verevkin, Sergey P.; Koutek, Bohumír, Determining the vapour pressures of plant volatiles from gas chromatographic retention data, Journal of Chromatography A, 2005, 1083, 1-2, 161-172, https://doi.org/10.1016/j.chroma.2005.06.006 . [all data]

Ru«7825»icka, Zábranský, et al., 1994
Ru«7825»icka, Vlastimil; Zábranský, Milan; Ru«7825»icka, Kvetoslav; Majer, Vladimír, Vapor pressures for a group of high-boiling alkylbenzenes under environmental conditions, Thermochimica Acta, 1994, 245, 121-144, https://doi.org/10.1016/0040-6031(94)85073-9 . [all data]

Reid, 1972
Reid, Robert C., Handbook on vapor pressure and heats of vaporization of hydrocarbons and related compounds, R. C. Wilhort and B. J. Zwolinski, Texas A Research Foundation. College Station, Texas(1971). 329 pages.$10.00, AIChE J., 1972, 18, 6, 1278-1278, https://doi.org/10.1002/aic.690180637 . [all data]

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]

McDonald, Shrader, et al., 1959
McDonald, R.A.; Shrader, S.A.; Stull, D.R., Vapor Pressures and Freezing Points of Thirty Pure Organic Compounds., J. Chem. Eng. Data, 1959, 4, 4, 311-313, https://doi.org/10.1021/je60004a009 . [all data]

Boublik, Fried, et al., 1984
Boublik, T.; Fried, V.; Hala, E., The Vapour Pressures of Pure Substances: Selected Values of the Temperature Dependence of the Vapour Pressures of Some Pure Substances in the Normal and Low Pressure Region, 2nd ed., Elsevier, New York, 1984, 972. [all data]

Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D., Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III, J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985 . [all data]

Tsvetkov, Rozhnov, et al., 1985
Tsvetkov, V.F.; Rozhnov, A.M.; Nesterova, T.N., Study of the equilibrium of isomerization and transalkylation of isopropyltoluenes, Neftekhimiya, 1985, 53-57. [all data]

Howell, Goncalves, et al., 1984
Howell, J.O.; Goncalves, J.M.; Amatore, C.; Klasinc, L.; Wightman, R.M.; Kochi, J.K., Electron transfer from aromatic hydrocarbons and their π-complexes with metals. Comparison of the standard oxidation potentials and vertical ionization potentials, J. Am. Chem. Soc., 1984, 106, 3968. [all data]


Notes

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