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p-Xylene

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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
Deltafliquid-24.4 ± 1.0kJ/molCcbProsen, Johnson, et al., 1946ALS
Quantity Value Units Method Reference Comment
Deltacliquid-4551.44 ± 0.50kJ/molCmCoops, Mulder, et al., 1946Reanalyzed by Cox and Pilcher, 1970, Original value = -4547.76 ± 0.50 kJ/mol; Corresponding «DELTA»fliquid = -25.8 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Deltacliquid-4552.86 ± 0.92kJ/molCcbProsen, Johnson, et al., 1946Corresponding «DELTA»fliquid = -24.4 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Deltacliquid-4551.7kJ/molCcbRichards and Barry, 1915At 291 K; Corresponding «DELTA»fliquid = -25.5 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Deltacliquid-4565.9kJ/molCcbRichards and Jesse, 1910At 293 K; Corresponding «DELTA»fliquid = -11.3 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Quantity Value Units Method Reference Comment
liquid247.154J/mol*KN/AMesserly, Finke, et al., 1988DH
liquid243.51J/mol*KN/APitzer and Scott, 1943DH
liquid253.1J/mol*KN/AHuffman, Parks, et al., 1930Extrapolation below 90 K, 65.19 J/mol*K.; DH

Constant pressure heat capacity of liquid

Cp,liquid (J/mol*K) Temperature (K) Reference Comment
182.219298.15Messerly, Finke, et al., 1988T = 10 to 400 K.; DH
183.65298.15Tardajos, Aicart, et al., 1986DH
181.937298.15Fortier and Benson, 1979DH
181.9298.15Ott, Goates, et al., 1979T = 288.15 to 328.15 K.; DH
181.794298.15Fortier and Benson, 1977DH
181.55298.15Wilhelm, Grolier, et al., 1977DH
181.7298.15Hyder Khan and Subrahmanyam, 1971T = 298; 313 K.; DH
198.7336.Swietoslawski and Zielenkiewicz, 1958Mean value 21 to 106 C.; DH
181.6298.Corruccini and Ginnings, 1947T = 273 to 573 K.; DH
184.9298.Kurbatov, 1947T = 15 to 132 C, mean Cp, three temperatures.; DH
183.76298.15Pitzer and Scott, 1943T = 14 to 360 K.; DH
180.3299.0Huffman, Parks, et al., 1930T = 92 to 299 K. Value is unsmoothed experimental datum.; DH
176.6303.Willams and Daniels, 1924T = 303 to 348 K. Equation only.; DH

References

Go To: Top, Condensed phase thermochemistry data, Notes

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

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]

Coops, Mulder, et al., 1946
Coops, J.; Mulder, D.; Dienske, J.W.; Smittenberg, J., The heats of combustion of a number of hydrocarbons, Rec. Trav. Chim. Pays/Bas, 1946, 65, 128. [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [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]

Richards and Jesse, 1910
Richards, T.W.; Jesse, R.H., Jr., The heats of combustion of the octanes and xylenes, J. Am. Chem. Soc., 1910, 32, 268-298. [all data]

Messerly, Finke, et al., 1988
Messerly, J.F.; Finke, H.L.; Good, W.D.; Gammon, B.E., Condensed-phase heat capacities and derived thermodynamic properties for 1,4-dimethylbenzene, 1,2-diphenylethane, and 2,3-dimethylnaphthalene, J. Chem. Thermodynam., 1988, 20, 485-501. [all data]

Pitzer and Scott, 1943
Pitzer, K.S.; Scott, D.W., The thermodynamics and molecular structure of benzene and its methyl derivatives, J. Am. Chem. Soc., 1943, 65, 803-829. [all data]

Huffman, Parks, et al., 1930
Huffman, H.M.; Parks, G.S.; Daniels, A.C., Thermal data on organic compounds. VII. The heat capacities, entropies and free energies of twelve aromatic hydrocarbons, J. Am. Chem. Soc., 1930, 52, 1547-1558. [all data]

Tardajos, Aicart, et al., 1986
Tardajos, G.; Aicart, E.; Costas, M.; Patterson, D., Liquid structure and second-order mixing functions for benzene, toluene, and p-xylene with n-alkanes, J. Chem. Soc., Faraday Trans., 1986, 1 82, 2977-2987. [all data]

Fortier and Benson, 1979
Fortier, J.-L.; Benson, G.C., Heat capacities of some binary aromatic hydrocarbon mixtures containing benzene or toluene, J. Chem. Eng. Data, 1979, 24(1), 34-37. [all data]

Ott, Goates, et al., 1979
Ott, J.B.; Goates, J.R.; Grigg, R.B., Excess volumes, enthalpies, and Gibbs free energies for mixtures of benzenes + p-xylene, J. Chem. Thermodynam., 1979, 11, 1167-1173. [all data]

Fortier and Benson, 1977
Fortier, J.-L.; Benson, G.C., Excess heat capacities of binary mixtures of tetrachloromethane witlh some aromatic liquids at 298.15 K, J. Chem. Thermodynam., 1977, 9, 1181-1188. [all data]

Wilhelm, Grolier, et al., 1977
Wilhelm, E.; Grolier, J.-P.E.; Karbalai Ghassemi, M.H., Molar heat capacities of binary liquid mixtures: 1,2-dichloroethane + benzene, + toluene, and + p-xylene, Ber. Bunsenges. Phys. Chem., 1977, 81, 925-930. [all data]

Hyder Khan and Subrahmanyam, 1971
Hyder Khan, V.; Subrahmanyam, S.V., Excess thermodynamic functions of the systems: benzene + p-xylene and benzene + p-dioxan, Trans. Faraday Soc., 1971, 67, 2282-2291. [all data]

Swietoslawski and Zielenkiewicz, 1958
Swietoslawski, W.; Zielenkiewicz, A., Mean specific heats of binary positive azeotropes, Bull. Acad. Pol. Sci. Ser. Sci. Chim., 1958, 6, 367-369. [all data]

Corruccini and Ginnings, 1947
Corruccini, R.J.; Ginnings, D.C., The enthalpy, entropy and specific heat of liquid p-xylene from 0 to 300°. The heat of fusion, J. Am. Chem. Soc., 1947, 69, 2291-2294. [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]

Willams and Daniels, 1924
Willams, J.W.; Daniels, F., The specific heats of certain organic liquids at elevated temperatures, J. Am. Chem. Soc., 1924, 46, 903-917. [all data]


Notes

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