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Benzene, pentafluoro-

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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
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
Tboil358. ± 1.KAVGN/AAverage of 7 values; Individual data points
Quantity Value Units Method Reference Comment
Ttriple225.67KN/APaukov and Lavrent'eva, 1969Uncertainty assigned by TRC = 0.02 K; TRC
Ttriple225.83KN/ACounsell, Hales, et al., 1968Uncertainty assigned by TRC = 0.02 K; TRC
Quantity Value Units Method Reference Comment
Tc532.KN/AMajer and Svoboda, 1985 
Tc530.8KN/ASkripov and Muratov, 1977TRC
Tc530.96KN/AHales and Townsend, 1974Uncertainty assigned by TRC = 0.05 K; TRC
Tc530.97KN/AAmbrose and Sprake, 1971Uncertainty assigned by TRC = 0.03 K; TRC
Tc531.95KN/AEvans and Tiley, 1966Uncertainty assigned by TRC = 0.05 K; TRC
Quantity Value Units Method Reference Comment
Pc34.25atmN/ASkripov and Muratov, 1977Vis, pc by extrapolation of VP; TRC
Pc34.85atmN/AAmbrose and Sprake, 1971Uncertainty assigned by TRC = 0.05 atm; TRC
Pc34.70atmN/AEvans and Tiley, 1966Uncertainty assigned by TRC = 0.099 atm; TRC
Quantity Value Units Method Reference Comment
rhoc3.080mol/lN/AHales and Townsend, 1974Uncertainty assigned by TRC = 0.0030 mol/l; Liquid density determined by magnetically balanced float up to 490 K, see J.L.Hales, 1970-128. Critical D by equation due to Riedel.; TRC
Quantity Value Units Method Reference Comment
Deltavap8.690kcal/molN/AMajer and Svoboda, 1985 
Deltavap8.65kcal/molN/AInvernizzi, 1982Based on data from 290. - 510. K. See also Basarová and Svoboda, 1991.; AC
Deltavap8.65 ± 0.05kcal/molVCox, Gundry, et al., 1969ALS
Deltavap8.697kcal/molVFindlay, 1969ALS

Enthalpy of vaporization

DeltavapH (kcal/mol) Temperature (K) Method Reference Comment
7.684358.9N/AMajer and Svoboda, 1985 
8.01373.AStephenson and Malanowski, 1987Based on data from 358. - 397. K.; AC
7.79408.AStephenson and Malanowski, 1987Based on data from 393. - 479. K.; AC
7.70488.AStephenson and Malanowski, 1987Based on data from 473. - 531. K.; AC
8.32337.AStephenson and Malanowski, 1987Based on data from 322. - 368. K. See also Ambrose, 1968.; AC
8.312 ± 0.001190.CCounsell, Hales, et al., 1968ALS
7.65388.EBEvans and Tiley, 1966, 2Based on data from 373. - 530. K.; AC
8.53313.N/APatrick and Prosser, 1964Based on data from 298. - 358. K. See also Boublik, Fried, et al., 1984.; AC

Enthalpy of vaporization

ΔvapH = A exp(-βTr) (1 − Tr)β
    ΔvapH = Enthalpy of vaporization (at saturation pressure) (kcal/mol)
    Tr = reduced temperature (T / Tc)

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Temperature (K) A (kcal/mol) beta Tc (K) Reference Comment
321. - 359.12.960.2911532.Majer and Svoboda, 1985 

Antoine Equation Parameters

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

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Temperature (K) A B C Reference Comment
321.88 - 367.54.155151253.674-57.179Ambrose, 1968, 2Coefficents calculated by NIST from author's data.
373.36 - 529.534.63061635.174-3.684Evans and Tiley, 1966, 3Coefficents calculated by NIST from author's data.

Enthalpy of fusion

DeltafusH (kcal/mol) Temperature (K) Reference Comment
2.6011225.67Paukov and Lavrent'eva, 1969, 2DH
2.5939225.83Counsell, Hales, et al., 1968, 2DH
2.600225.7Acree, 1991AC

Entropy of fusion

DeltafusS (cal/mol*K) Temperature (K) Reference Comment
11.52225.67Paukov and Lavrent'eva, 1969, 2DH
11.49225.83Counsell, Hales, et al., 1968, 2DH

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:


References

Go To: Top, Phase change data, Notes

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

Paukov and Lavrent'eva, 1969
Paukov, I.E.; Lavrent'eva, M.N., Thermodynamic properties of pentafluorobenzene over the range 12-300 K, Zh. Fiz. Khim., 1969, 43, 2938. [all data]

Counsell, Hales, et al., 1968
Counsell, J.F.; Hales, J.L.; Martin, J.F., Thermodynamic properties of flourine compounds. Part VI. The heat capacity and entropy of pentafluorobenzene, J. Chem. Soc. A, 1968, 2042. [all data]

Majer and Svoboda, 1985
Majer, V.; Svoboda, V., Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation, Blackwell Scientific Publications, Oxford, 1985, 300. [all data]

Skripov and Muratov, 1977
Skripov, V.P.; Muratov, G.N., The surface tensions of liquids and their interpretation by the method of thermodynamic similarity., Russ. J. Phys. Chem. (Engl. Transl.), 1977, 51, 806-8. [all data]

Hales and Townsend, 1974
Hales, J.L.; Townsend, R., Liquid Densities from 293 to 490 K of Eight Fluorinated Aromatic Comp., J. Chem. Thermodyn., 1974, 6, 111-6. [all data]

Ambrose and Sprake, 1971
Ambrose, D.; Sprake, C.H.S., Thermodynamic properties of fluorine compounds: x critical properties and vapour pressures of pentafluorobenzene, chloropentafluorobenzene, 2,3,4,5,6 -pentafluorotoluene, and pentafluorophenol, J. Chem. Soc. A, 1971, 1971, 1263. [all data]

Evans and Tiley, 1966
Evans, F.D.; Tiley, P.F., Vapour Pressures and Critical Constants of Hexafluoro, Pentafluoro-, Chloropentafrluoro-, and Bromopentafluoro-benzene, J. Chem. Soc. B, 1966, 1966, 134-6. [all data]

Invernizzi, 1982
Invernizzi, C., Termotecnica, 1982, 4, 78. [all data]

Basarová and Svoboda, 1991
Basarová, Pavlína; Svoboda, Václav, Calculation of heats of vaporization of halogenated hydrocarbons from saturated vapour pressure data, Fluid Phase Equilibria, 1991, 68, 13-34, https://doi.org/10.1016/0378-3812(91)85008-I . [all data]

Cox, Gundry, et al., 1969
Cox, J.D.; Gundry, H.A.; Harrop, D.; Head, A.J., Thermodynamic properties of fluorine compounds. 9. Enthalpies of formation of some compounds containing the pentafluorophenyl group, J. Chem. Thermodyn., 1969, 1, 77-87. [all data]

Findlay, 1969
Findlay, T.J.V., Vapor pressures of fluorobenzenes from 5° to 50°C, J. Chem. Eng. Data, 1969, 14, 229. [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]

Ambrose, 1968
Ambrose, D., Thermodynamic properties of fluorine compounds. Part V. Vapour pressures of pentafluorobenzene, chloropentafluorobenzene, 2,3,4,5,6-pentafluorotoluene, and pentafluorophenol, J. Chem. Soc., A, 1968, 1381, https://doi.org/10.1039/j19680001381 . [all data]

Evans and Tiley, 1966, 2
Evans, F.D.; Tiley, P.F., Vapour pressures and critical constants of hexafluoro-, pentafluoro-, chloropentafluoro-, and bromopentafluoro-benzene, J. Chem. Soc., B:, 1966, 134, https://doi.org/10.1039/j29660000134 . [all data]

Patrick and Prosser, 1964
Patrick, C.R.; Prosser, G.S., Vapour pressures and related properties of hexafluorobenzene and of pentafluorobenzene, Trans. Faraday Soc., 1964, 60, 700, https://doi.org/10.1039/tf9646000700 . [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]

Ambrose, 1968, 2
Ambrose, D., Thermodynamic Properties of Fluorine Compounds. Part V. Vapour Pressures of Pentafluorobenzene, Chloropentafluorobenzene, 2,3,4,5,6-Pentafluorotoluene, and Pentafluorophenol, J. Chem. Soc. A:, 1968, 1381-1383, https://doi.org/10.1039/j19680001381 . [all data]

Evans and Tiley, 1966, 3
Evans, F.D.; Tiley, Vapour Pressures and Critical Constants of Hexafluoro-, Pentafluoro-, Chloropentafluoro-, and Bromopentafluoro-benzene, J. Chem. Soc. B:, 1966, 134-136, https://doi.org/10.1039/j29660000134 . [all data]

Paukov and Lavrent'eva, 1969, 2
Paukov, I.E.; Lavrent'eva, M.N., Thermodynamic properties of pentafluorobenzene over the range 12-300K, Zhur. Fiz. Khim., 1969, 43, 2938-2941. [all data]

Counsell, Hales, et al., 1968, 2
Counsell, J.F.; Hales, J.L.; Martin, J.F., Thermodynamic properties of fluorine compounds. Part VI. The heat capacity and entropy of pentafluorobenzene, J. Chem. Soc. A, 1968, 2042-2044. [all data]

Acree, 1991
Acree, William E., Thermodynamic properties of organic compounds: enthalpy of fusion and melting point temperature compilation, Thermochimica Acta, 1991, 189, 1, 37-56, https://doi.org/10.1016/0040-6031(91)87098-H . [all data]


Notes

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