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Phenol, 3,4-dimethyl-

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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
DRB - Donald R. Burgess, Jr.
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Tboil500. ± 2.KAVGN/AAverage of 9 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus337. ± 3.KAVGN/AAverage of 15 values; Individual data points
Quantity Value Units Method Reference Comment
Tc729.85KN/AAmbrose, 1963Uncertainty assigned by TRC = 0.8 K; TRC
Tc769.55KN/AGlaser and Ruland, 1957Uncertainty assigned by TRC = 2. K; TRC
Quantity Value Units Method Reference Comment
Pc65.0000atmN/AGlaser and Ruland, 1957Uncertainty assigned by TRC = 3.0000 atm; TRC
Quantity Value Units Method Reference Comment
Deltavap20.32kcal/molN/AMajer and Svoboda, 1985 
Deltavap20.3kcal/molN/AMorawetz, 1971AC
Deltavap20.3kcal/molN/AMorawetz, Elvebredd, et al., 1968AC
Deltavap10.90kcal/molCGlaser and Ruland, 1957ALS
Quantity Value Units Method Reference Comment
Deltasub20.3kcal/molN/AMorawetz, 1971AC
Deltasub20.3kcal/molN/AMorawetz, Elvebredd, et al., 1968Author of Morawetz, Elvebredd, et al., 1968 refers to the determined value as the enthalpy of vaporization even though the compound is a solid; AC
Deltasub20.49 ± 0.03kcal/molVAndon, Biddiscombe, et al., 1960ALS
Deltasub20.5kcal/molN/AAndon, Biddiscombe, et al., 1960DRB

Enthalpy of vaporization

DeltavapH (kcal/mol) Temperature (K) Method Reference Comment
13.1459.A,GS,EBStephenson and Malanowski, 1987Based on data from 444. - 502. K. See also Andon, Biddiscombe, et al., 1960, 2.; AC

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
445.08 - 502.14.166401598.887-116.356Andon, Biddiscombe, et al., 1960Coefficents calculated by NIST from author's data.

Enthalpy of sublimation

DeltasubH (kcal/mol) Temperature (K) Method Reference Comment
20.5 ± 0.02282. - 323.GSAndon, Biddiscombe, et al., 1960, 2See also Cox and Pilcher, 1970 and Stephenson and Malanowski, 1987.; AC
17.3 ± 0.2299.VWolf and Weghofer, 1938ALS

Enthalpy of fusion

DeltafusH (kcal/mol) Temperature (K) Method Reference Comment
4.3325334.0N/APoeti, Fanelli, et al., 1982DH
4.551338.5DSCJamróz, Palczewska-Tulinska, et al., 1998AC
4.333334.N/AAcree, 1991AC

Entropy of fusion

DeltafusS (cal/mol*K) Temperature (K) Reference Comment
12.97334.0Poeti, Fanelli, et al., 1982DH

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.

Ambrose, 1963
Ambrose, D., Critical Temperatures of Some Phenols and Other Organic Compounds, Trans. Faraday Soc., 1963, 59, 1988. [all data]

Glaser and Ruland, 1957
Glaser, F.; Ruland, H., Untersuchungsen über dampfdruckkurven und kritische daten einiger technisch wichtiger organischer substanzen, Chem. Ing. Techn., 1957, 29, 772. [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]

Morawetz, 1971
Morawetz, E., Chem. Scr., 1971, 1, 103. [all data]

Morawetz, Elvebredd, et al., 1968
Morawetz, Ernst; Elvebredd, I.; Brunvoll, J.; Hagen, G.; Paasivirta, Jaakko, A Non-Equilibrium Low Vapor Pressure Heat of Vaporization Calorimeter. Part I. Vapor Pressure Range 200-10^-3 mm Hg., Acta Chem. Scand., 1968, 22, 1509-1531, https://doi.org/10.3891/acta.chem.scand.22-1509 . [all data]

Andon, Biddiscombe, et al., 1960
Andon, R.J.L.; Biddiscombe, D.P.; Cox, J.D.; Handley, R.; Harrop, D.; Herington, E.F.G.; Martin, J.F., Thermodynamic properties of organic oxygen compounds. Part I. Preparation and physical properties of pure phenol, cresols, and xylenols, J. Chem. Soc., 1960, 5246-5254. [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]

Andon, Biddiscombe, et al., 1960, 2
Andon, R.J.L.; Biddiscombe, D.P.; Cox, J.D.; Handley, R.; Harrop, D.; Herington, E.F.G.; Martin, J.F., 1009. Thermodynamic properties of organic oxygen compounds. Part I. Preparation and physical properties of pure phenol, cresols, and xylenols, J. Chem. Soc., 1960, 5246, https://doi.org/10.1039/jr9600005246 . [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press Inc., London, 1970, 643. [all data]

Wolf and Weghofer, 1938
Wolf, K.L.; Weghofer, H., Uber sublimationswarmen, Z. Phys. Chem., 1938, 39, 194-208. [all data]

Poeti, Fanelli, et al., 1982
Poeti, G.; Fanelli, E.; Braghetti, M., A differential scanning calorimetric study of some phenol derivatives, J. Therm. Anal., 1982, 24(2), 273-279. [all data]

Jamróz, Palczewska-Tulinska, et al., 1998
Jamróz, Malgorzata E.; Palczewska-Tulinska, Marcela; Wyrzykowska-Stankiewicz, Danuta; Szafranski, Andrzej M.; Polaczek, Jerzy; Dobrowolski, Jan Cz.; Jamróz, Michal H.; Mazurek, Aleksander P., The urea--phenol(s) systems, Fluid Phase Equilibria, 1998, 152, 2, 307-326, https://doi.org/10.1016/S0378-3812(98)90206-0 . [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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