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Hexafluorobenzene

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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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, M. Frenkel director
BS - R.L. Brown and S.E. Stein
AC - W.E. Acree, Jr., J.S. Chickos
ALS - H.Y. Afeefy, J.F. Liebman, and S.E. Stein
DH - E.S. Domalski and E.D. Hearing

QuantityValueUnitsMethodReferenceComment
Tboil353.4 ± 0.3KAVGN/AAverage of 10 values; Individual data points
QuantityValueUnitsMethodReferenceComment
Tfus278.2 ± 0.2KAVGN/AAverage of 7 values; Individual data points
QuantityValueUnitsMethodReferenceComment
Ttriple278.30KN/AMesserly and Finke, 1970Uncertainty assigned by TRC = 0.02 K; TRC
Ttriple278.14KN/APaukov and Glukhikh, 1967Crystal phase 1 phase; Uncertainty assigned by TRC = 0.15 K; TRC
Ttriple278.25KN/ACounsell, Green, et al., 1965Uncertainty assigned by TRC = 0.02 K; TRC
QuantityValueUnitsMethodReferenceComment
Tc517. ± 1.KAVGN/AAverage of 9 values; Individual data points
QuantityValueUnitsMethodReferenceComment
Pc33. ± 3.barAVGN/AAverage of 6 values; Individual data points
QuantityValueUnitsMethodReferenceComment
Vc0.3351l/molN/ADouslin, Harrison, et al., 1969Uncertainty assigned by TRC = 0.0017 l/mol; TRC
QuantityValueUnitsMethodReferenceComment
rhoc2.958mol/lN/AHales and Townsend, 1974Uncertainty assigned by TRC = 0.0029 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
rhoc2.65mol/lN/AMousa, Kay, et al., 1972Uncertainty assigned by TRC = 0.0264 mol/l; TRC
QuantityValueUnitsMethodReferenceComment
Deltavap35.9 ± 0.6kJ/molAVGN/AAverage of 9 values; Individual data points

Reduced pressure boiling point

Tboil (K)Pressure (bar)ReferenceComment
354.70.991Aldrich Chemical Company Inc., 1990BS
354. - 355.0.991PCR Inc., 1990BS

Enthalpy of vaporization

DeltavapH (kJ/mol)Temperature (K)MethodReferenceComment
31.66353.3N/AMajer and Svoboda, 1985 
36.5293.N/ADouslin and Osborn, 2002Based on data from 275. - 387. K.; AC
34.4333.EBAmbrose, Ewing, et al., 1990Based on data from 318. - 376. K.; AC
31.8425.N/ADavies, Ewing, et al., 1988Based on data from 403. - 516. K.; AC
36.5293.AStephenson and Malanowski, 1987Based on data from 278. - 354. K.; AC
33.2363.AStephenson and Malanowski, 1987Based on data from 348. - 389. K.; AC
32.2399.AStephenson and Malanowski, 1987Based on data from 384. - 462. K.; AC
31.8473.AStephenson and Malanowski, 1987Based on data from 458. - 517. K.; AC
35.7308.N/APatrick and Tomes, 1980Based on data from 293. - 323. K.; AC
36.2292.MMFindlay, 1969Based on data from 278. - 321. K.; AC
32.2378.EBEvans and Tiley, 1966Based on data from 363. - 516. K.; AC
35.1308.N/APatrick and Prosser, 1964Based on data from 293. - 356. K.; AC
35.5308.N/APatrick and Prosser, 1964Based on data from 293. - 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) (kJ/mol)
    Tr = reduced temperature (T / Tc)

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Temperature (K)A (kJ/mol)betaTc (K)ReferenceComment
301. - 377.55.090.3016516.7Majer and Svoboda, 1985 

Antoine Equation Parameters

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

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Temperature (K)ABCReferenceComment
353.40 - 516.674.631271563.21-15.19Douslin, Harrison, et al., 1969, 2Coefficents calculated by NIST from author's data.
277.89 - 321.003.987511153.509-64.352Findlay, 1969Coefficents calculated by NIST from author's data.
310.4 - 361.944.143561220.117-58.543Counsell, Green, et al., 1965, 2Coefficents calculated by NIST from author's data.
278.4 - 387.194.160541229.449-57.503Douslin and Osborn, 1965Coefficents calculated by NIST from author's data.

Enthalpy of sublimation

DeltasubH (kJ/mol)Temperature (K)MethodReferenceComment
49.2263.AStephenson and Malanowski, 1987Based on data from 215. - 278. K. See also Douslin and Osborn, 2002.; AC
49.8253.IP,AScott and Osborn, 1979Based on data from 238. - 268. K.; AC
46.0316.BCounsell, Green, et al., 1965AC

Enthalpy of fusion

DeltafusH (kJ/mol)Temperature (K)ReferenceComment
11.585278.30Messerly and Finke, 1970, 2DH
11.590278.25Counsell, Green, et al., 1965, 2DH
11.59278.3Domalski and Hearing, 1996AC

Entropy of fusion

DeltafusS (J/mol*K)Temperature (K)ReferenceComment
41.63278.30Messerly and Finke, 1970, 2DH
41.65278.25Counsell, Green, et al., 1965, 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.

Messerly and Finke, 1970
Messerly, J.F.; Finke, H.L., hexafluorobenzene and 1,3-difluorobenzene low temperature calorimetric studies and chemical thermodynamic properties, J. Chem. Thermodyn., 1970, 2, 867-80. [all data]

Paukov and Glukhikh, 1967
Paukov, I.E.; Glukhikh, L.K., Low temperature specific heats and absolute entropies of hexafluorobenzene and pentafluorochlorobenzene, Zh. Vses. Khim. O-va. im. D. I. Mendeleeva, 1967, 12, 236-7. [all data]

Counsell, Green, et al., 1965
Counsell, J.F.; Green, J.H.S.; Hales, J.L.; Martin, J.F., Thermodynamic properties of fluorine compounds Part 2.-Physical and thermodynamic properties of hexafluorobenzene, Trans. Faraday Soc., 1965, 61, 212. [all data]

Douslin, Harrison, et al., 1969
Douslin, D.R.; Harrison, R.H.; Moore, R.T., Pressure-Volume-Temperature Relations of Hexafluorobenzene, J. Chem. Thermodyn., 1969, 1, 305-19. [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]

Mousa, Kay, et al., 1972
Mousa, A.H.N.; Kay, W.B.; Kreglewski, A., The critical constants of binary mixtures of certain perfluoro-compounds with alkanes, J. Chem. Thermodyn., 1972, 4, 301-11. [all data]

Aldrich Chemical Company Inc., 1990
Aldrich Chemical Company Inc., Catalog Handbook of Fine Chemicals, Aldrich Chemical Company, Inc., Milwaukee WI, 1990, 1. [all data]

PCR Inc., 1990
PCR Inc., Research Chemicals Catalog 1990-1991, PCR Inc., Gainesville, FL, 1990, 1. [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]

Douslin and Osborn, 2002
Douslin, D.R.; Osborn, A., Pressure measurements in the 0.01-30 torr range with an inclined-piston gauge, J. Sci. Instrum., 2002, 42, 6, 369-373. [doi:10.1088/0950-7671/42/6/301] [all data]

Ambrose, Ewing, et al., 1990
Ambrose, D.; Ewing, M.B.; Ghiassee, N.B.; Sanchez Ochoa, J.C., The ebulliometric method of vapour-pressure measurement: vapour pressures of benzene, hexafluorobenzene, and naphthalene, The Journal of Chemical Thermodynamics, 1990, 22, 6, 589-605. [doi:10.1016/0021-9614(90)90151-F] [all data]

Davies, Ewing, et al., 1988
Davies, D.R.; Ewing, M.B.; Hugill, J.A.; McGlashan, M.L., The critical temperature, the critical pressure, and the dependence of vapour pressure on temperature for dodecafluorocyclohexane and hexafluorobenzene, Can. J. Chem., 1988, 66, 4, 760-762. [doi:10.1139/v88-131] [all data]

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

Patrick and Tomes, 1980
Patrick, C.R.; Tomes, F., The vapour pressures and excess free energies of mixing of the systems hexafluorobenzene-carbon tetrachloride and hexafluorobenzene-perfluoromethylcyclohexane, Journal of Fluorine Chemistry, 1980, 15, 4, 267-278. [doi:10.1016/S0022-1139(00)81462-1] [all data]

Findlay, 1969
Findlay, T.J.V., Vapor pressures of fluorobenzenes from 5 to 50.deg.C, J. Chem. Eng. Data, 1969, 14, 2, 229-231. [doi:10.1021/je60041a012] [all data]

Evans and Tiley, 1966
Evans, F.D.; Tiley, P.F., Vapour pressures and critical constants of hexafluoro-, pentafluoro-, chloropentafluoro-, and bromopentafluoro-benzene, J. Chem. Soc., B:, 1966, 134. [doi: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. [doi: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]

Douslin, Harrison, et al., 1969, 2
Douslin, D.R.; Harrison, R.H.; Moore, R.T., Pressure-Volume-Temperature Relations of Hexafluorobenzene, J. Chem. Thermodyn., 1969, 1, 3, 305-319. [doi:10.1016/0021-9614(69)90050-0] [all data]

Counsell, Green, et al., 1965, 2
Counsell, J.F.; Green, J.H.S.; Hales, J.L.; Martin, J.F., Thermodynamic properties of fluorine compounds. Part 2. Physical and thermodynamic properties of hexafluorobenzene, Trans. Faraday Soc., 1965, 61, 212-218. [all data]

Douslin and Osborn, 1965
Douslin, D.R.; Osborn, A., Pressure Measurements in the 0·01-30 Torr with an Inclined-Piston Gauge, J. Sci. Instrum., 1965, 42, 6, 369-373. [doi:10.1088/0950-7671/42/6/301] [all data]

Scott and Osborn, 1979
Scott, D.W.; Osborn, A.G., Representation of vapor-pressure data, J. Phys. Chem., 1979, 83, 21, 2714-2723. [doi:10.1021/j100484a007] [all data]

Messerly and Finke, 1970, 2
Messerly, J.F.; Finke, H.L., Hexafluorobenzene and 1,3-difluorobenzene. Low-temperature calorimetric studies and chemical thermodynamic properties, J. Chem. Thermodynam., 1970, 2, 867-880. [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. [doi:10.1063/1.555985] [all data]


Notes

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