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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, Kenneth Kroenlein 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
Tfus346.0 ± 0.7KAVGN/AAverage of 16 out of 17 values; Individual data points
Quantity Value Units Method Reference Comment
Deltavap172.7kJ/molCGCChickos and Hanshaw, 2004Based on data from 534. - 565. K.; AC

Reduced pressure boiling point

Tboil (K) Pressure (bar) Reference Comment
558.20.003Aldrich Chemical Company Inc., 1990BS
558.60.004Weast and Grasselli, 1989BS

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Method Reference Comment
152. ± 2.471.TEPiacente, Fontana, et al., 1994Based on data from 446. - 497. K.; AC
149.7387.AStephenson and Malanowski, 1987Based on data from 372. - 402. K.; AC
120.3538.A,EStephenson and Malanowski, 1987Based on data from 523. - 756. K. See also Kudchadker and Zwolinski, 1966.; AC

Enthalpy of fusion

DeltafusH (kJ/mol) Temperature (K) Method Reference Comment
95.64346.1DSCWang, Tozaki, et al., 2006AC
79.96345.9N/ADomalski and Hearing, 1996AC

Entropy of fusion

DeltafusS (J/mol*K) Temperature (K) Reference Comment
85.8341.5Acree, 1993CAL

Temperature of phase transition

Ttrs (K) Initial Phase Final Phase Reference Comment
342.25crystaline, IIIcrystaline, IICompany, 1973DH

Enthalpy of phase transition

DeltaHtrs (kJ/mol) Temperature (K) Initial Phase Final Phase Reference Comment
48.032342.65crystaline, IIcrystaline, ICompany, 1973DH
79.956345.95crystaline, IliquidCompany, 1973DH
48.032341.1crystaline, IIcrystaline, IGarner, Van Bibber, et al., 1931DH
79.956345.6crystaline, IliquidGarner, Van Bibber, et al., 1931DH

Entropy of phase transition

DeltaStrs (J/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
140.2342.65crystaline, IIcrystaline, ICompany, 1973DH
231.1345.95crystaline, IliquidCompany, 1973DH
140.8341.1crystaline, II, ácrystaline, I, à transitionGarner, Van Bibber, et al., 1931DH
231.4345.6crystaline, 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.

Chickos and Hanshaw, 2004
Chickos, James S.; Hanshaw, William, Vapor Pressures and Vaporization Enthalpies of the n -Alkanes from C 31 to C 38 at T = 298.15 K by Correlation Gas Chromatography, J. Chem. Eng. Data, 2004, 49, 3, 620-630, https://doi.org/10.1021/je030236t . [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]

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]

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, https://doi.org/10.1021/je00014a009 . [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]

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, https://doi.org/10.1021/je60029a039 . [all data]

Wang, Tozaki, et al., 2006
Wang, Shaolan; Tozaki, Ken-Ichi; Hayashi, Hideko; Inaba, Hideaki; Yamamoto, Hiroko, Observation of multiple phase transitions in some even n-alkanes using a high resolution and super-sensitive DSC, Thermochimica Acta, 2006, 448, 2, 73-81, https://doi.org/10.1016/j.tca.2006.06.022 . [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, https://doi.org/10.1063/1.555985 . [all data]

Acree, 1993
Acree, W.E., Jr., Thermodynamic properties of organic compounds, Thermochim. Acta, 1993, 219, 97, https://doi.org/10.1016/0040-6031(93)80486-T . [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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