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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
CAL - James S. Chickos, William E. Acree, Jr., Joel F. Liebman, Students of Chem 202 (Introduction to the Literature of Chemistry), University of Missouri -- St. Louis
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Tboil722.9KN/AWeast and Grasselli, 1989BS
Quantity Value Units Method Reference Comment
Tfus338.9 ± 0.5KAVGN/AAverage of 19 out of 22 values; Individual data points
Quantity Value Units Method Reference Comment
Deltavap152.3kJ/molCGCChickos and Hanshaw, 2004Based on data from 434. - 539. K.; AC
Deltavap164.5 ± 0.4kJ/molCGCNichols, Orf, et al., 2000AC

Reduced pressure boiling point

Tboil (K) Pressure (bar) Reference Comment
531.70.004Aldrich Chemical Company Inc., 1990BS

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Method Reference Comment
143. ± 2.454.TEPiacente, Fontana, et al., 1994Based on data from 422. - 487. K.; AC
111.3510.A,EStephenson and Malanowski, 1987Based on data from 495. - 723. K. See also Kudchadker and Zwolinski, 1966.; AC

Enthalpy of fusion

DeltafusH (kJ/mol) Temperature (K) Reference Comment
68.83338.7Domalski and Hearing, 1996AC

Entropy of fusion

DeltafusS (J/mol*K) Temperature (K) Reference Comment
111.82335.3Domalski and Hearing, 1996CAL

Temperature of phase transition

Ttrs (K) Initial Phase Final Phase Reference Comment
335.15crystaline, IIcrystaline, ISchaerer, Busso, et al., 1955DH
338.55crystaline, IliquidSchaerer, Busso, et al., 1955DH

Enthalpy of phase transition

DeltaHtrs (kJ/mol) Temperature (K) Initial Phase Final Phase Reference Comment
37.489335.25crystaline, IIcrystaline, ICompany, 1973DH
68.827338.65crystaline, IliquidCompany, 1973DH
36.484332.2crystaline, IIcrystaline, IGarner, Van Bibber, et al., 1931DH
68.827338.7crystaline, IliquidGarner, Van Bibber, et al., 1931DH

Entropy of phase transition

DeltaStrs (J/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
111.8335.25crystaline, IIcrystaline, ICompany, 1973DH
203.2338.65crystaline, IliquidCompany, 1973DH
109.8332.2crystaline, II, ácrystaline, I, à transitionGarner, Van Bibber, et al., 1931DH
203.2338.7crystaline, IliquidGarner, Van Bibber, et al., 1931DH

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:


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.

Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]

Chickos and Hanshaw, 2004
Chickos, James S.; Hanshaw, William, Vapor Pressures and Vaporization Enthalpies of the n -Alkanes from C 21 to C 30 at T = 298.15 K by Correlation Gas Chromatography, J. Chem. Eng. Data, 2004, 49, 1, 77-85, . [all data]

Nichols, Orf, et al., 2000
Nichols, Gary; Orf, Jennifer; Reiter, Sarah M.; Chickos, James; Gokel, George W., The vaporization enthalpies of some crown and polyethers by correlation gas chromatography, Thermochimica Acta, 2000, 346, 1-2, 15-28, . [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]

Piacente, Fontana, et al., 1994
Piacente, Vincenzo; Fontana, Danilo; Scardala, Paolo, Enthalpies of Vaporization of a Homologous Series of n-Alkanes Determined from Vapor Pressure Measurements, J. Chem. Eng. Data, 1994, 39, 2, 231-237, . [all data]

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, . [all data]

Kudchadker and Zwolinski, 1966
Kudchadker, A.P.; Zwolinski, B.J., Vapor Pressure and Boiling Points of Normal Alkanes, C 21 to C 100 ., J. Chem. Eng. Data, 1966, 11, 2, 253-255, . [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, . [all data]

Schaerer, Busso, et al., 1955
Schaerer, A.A.; Busso, C.J.; Smith, A.E.; Skinner, L.B., Properties of pure normal alkanes in the C17 to C36 range, J. Am. Chem. Soc., 1955, 77, 2017-2019. [all data]

Company, 1973
Company, J.C., Measurement and interpretation of crystallization equilibriums of heavy paraffin and aromatic hydrocarbon solutions, Chem. Eng. Sci., 1973, 28, 318-323. [all data]

Garner, Van Bibber, et al., 1931
Garner, W.E.; Van Bibber, K.; King, A.M., The melting points and heats of crystallization of the normal long-chain hydrocarbons, J. Chem. Soc. (London), 1931, 1931, 1533-1541. [all data]


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