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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.
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
Tboil740.2KN/AWeast and Grasselli, 1989BS
Quantity Value Units Method Reference Comment
Tfus343. ± 1.KAVGN/AAverage of 38 out of 39 values; Individual data points
Quantity Value Units Method Reference Comment
Δvap38.84kcal/molCGCChickos and Hanshaw, 2004Based on data from 534. - 565. K.; AC
Quantity Value Units Method Reference Comment
Δsub64.8 ± 0.6kcal/molEParks, West, et al., 1946Heat of formation derived by Cox and Pilcher, 1970; ALS
Δsub64.82kcal/molN/AParks, West, et al., 1946DRB

Enthalpy of vaporization

ΔvapH (kcal/mol) Temperature (K) Method Reference Comment
35.1 ± 0.2456.TEPiacente, Fontana, et al., 1994Based on data from 437. - 477. K.; AC
31.19376.AStephenson and Malanowski, 1987Based on data from 361. - 395. K.; AC
27.7535.A,EStephenson and Malanowski, 1987Based on data from 510. - 741. K. See also Kudchadker and Zwolinski, 1966.; AC

Enthalpy of fusion

ΔfusH (kcal/mol) Temperature (K) Method Reference Comment
19.06341.9DSCTozaki, Inaba, et al., 2003AC
18.30343.5N/ADomalski and Hearing, 1996AC

Entropy of fusion

ΔfusS (cal/mol*K) Temperature (K) Reference Comment
29.202338.7Domalski and Hearing, 1996CAL
53.282343.5

Enthalpy of phase transition

ΔHtrs (kcal/mol) Temperature (K) Initial Phase Final Phase Reference Comment
9.8891338.65crystaline, IIcrystaline, ICompany, 1973DH
18.300343.45crystaline, IliquidCompany, 1973DH

Entropy of phase transition

ΔStrs (cal/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
29.21338.65crystaline, IIcrystaline, ICompany, 1973DH
53.27343.45crystaline, IliquidCompany, 1973DH

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

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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 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]

Parks, West, et al., 1946
Parks, G.S.; West, T.J.; Naylor, B.F.; Fujii, P.S.; McClaine, L.A., Thermal data on organic compounds. XXIII. Modern combustion data for fourteen hydrocarbons and five polyhydroxy alcohols, J. Am. Chem. Soc., 1946, 68, 2524-2527. [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [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]

Tozaki, Inaba, et al., 2003
Tozaki, Ken-ichi; Inaba, Hideaki; Hayashi, Hideko; Quan, Chanhji; Nemoto, Norio; Kimura, Tsunehisa, Phase transitions of n-C32H66 measured by means of high resolution and super-sensitive DSC, Thermochimica Acta, 2003, 397, 1-2, 155-161, https://doi.org/10.1016/S0040-6031(02)00273-3 . [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]

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]


Notes

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