Benzene, 1,2,4-trimethyl-

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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-14.79 ± 0.27kcal/molCcbJohnson, Prosen, et al., 1945Hf by Prosen, Johnson, et al., 1946; ALS
Quantity Value Units Method Reference Comment
Δcliquid-1241.58 ± 0.24kcal/molCcbJohnson, Prosen, et al., 1945Hf by Prosen, Johnson, et al., 1946; Corresponding Δfliquid = -14.77 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS
Δcliquid-1240.6kcal/molCcbRichards and Barry, 1915At 291 K; Corresponding Δfliquid = -15.8 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS
Quantity Value Units Method Reference Comment
liquid67.729cal/mol*KN/APutnam and Kilpatrick, 1957DH
liquid67.71cal/mol*KN/AHuffman, Parks, et al., 1931Extrapolation below 90 K, 69.79 J/mol*K.; DH

Constant pressure heat capacity of liquid

Cp,liquid (cal/mol*K) Temperature (K) Reference Comment
50.935298.15Wilhelm, Inglese, et al., 1987DH
50.69295.99Andolenko and Grigor'ev, 1979T = 293 to 430 K. Unsmoothed experimental datum given as 1.765 kJ/kg*K.; DH
51.379298.15Putnam and Kilpatrick, 1957T = 15 to 300 K.; DH
50.289299.8Helfrey, Heiser, et al., 1955T = 80 to 220°F.; DH
50.91298.Kurbatov, 1947T = 15 to 168°C, mean Cp, five temperatures.; DH
50.69297.3Huffman, Parks, et al., 1931T = 94 to 297 K. Value is unsmoothed experimental datum.; DH

References

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Johnson, Prosen, et al., 1945
Johnson, W.H.; Prosen, E.J.; Rossini, F.D., Heats of combustion and isomerization of the eight C9H12 alkylbenzenes, J. Res. NBS, 1945, 35, 141-146. [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]

Richards and Barry, 1915
Richards, T.W.; Barry, F., The heats of combustion of aromatic hydrocarbons and hexamethylene, J. Am. Chem. Soc., 1915, 37, 993-1020. [all data]

Putnam and Kilpatrick, 1957
Putnam, W.E.; Kilpatrick, J.E., Entropy, heat capacity and heats of transition of 1,2,4-trimethylbenzene, J. Chem. Phys., 1957, 27, 1075-1080. [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]

Wilhelm, Inglese, et al., 1987
Wilhelm, E.; Inglese, A.; Roux, A.H.; Grolier, J.-P.E., Excess enthalpy, excess heat capacity and excess volume of 1,2,4-trimethylbenzene +, and 1-methylnaphthalene + an n-alkane, Fluid Phase Equilibria, 1987, 34, 49-67. [all data]

Andolenko and Grigor'ev, 1979
Andolenko, R.A.; Grigor'ev, B.A., Investigation of isobaric heat capacity of aromatic hydrocarbons at atmospheric pressure, Iaz. Vyssh. Ucheb. Zaved., Neft i Gaz (11), 1979, 78, 90. [all data]

Helfrey, Heiser, et al., 1955
Helfrey, P.F.; Heiser, D.A.; Sage, B.H., Isobaric heat capacities at bubble point, Two trimethylbenzenes and n-heptane, Ind. Eng. Chem., 1955, 44, 2385-2388. [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]


Notes

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