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Condensed phase thermochemistry 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:
DH - Eugene S. Domalski and Elizabeth D. Hearing
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Δfsolid-967.8 ± 8.8kJ/molCcbParks, West, et al., 1946Heat of formation derived by Cox and Pilcher, 1970; ALS
Quantity Value Units Method Reference Comment
Δcsolid-21056.8 ± 8.4kJ/molCcbParks, West, et al., 1946Reanalyzed by Cox and Pilcher, 1970, Original value = -21055.2 ± 8.4 kJ/mol; Heat of formation derived by Cox and Pilcher, 1970; Corresponding Δfsolid = -967.88 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Quantity Value Units Method Reference Comment
solid,1 bar851.4J/mol*KN/AParks, Moore, et al., 1949Extrapolation below 80 K, 214.8 J/mol*K.; DH

Constant pressure heat capacity of liquid

Cp,liquid (J/mol*K) Temperature (K) Reference Comment
1356.348.Verdonk, 1938DH

Constant pressure heat capacity of solid

Cp,solid (J/mol*K) Temperature (K) Reference Comment
806.300.Hoehne, 1981T = 300 to 500 K. Cv = 1.77 J/g*K.; DH
877.4298.15Parks, Moore, et al., 1949T = 80 to 300 K.; DH
1059.338.Verdonk, 1938crystaline, α phase; DH
1038.333.Verdonk, 1938crystaline, β phase; DH

References

Go To: Top, Condensed phase thermochemistry data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

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]

Parks, Moore, et al., 1949
Parks, G.S.; Moore, G.E.; Renquist, M.L.; Naylor, B.F.; McClaine, L.A.; Fujii, P.S.; Hatton, J.A., Thermal data on organic compounds. XXV. Some heat capacity, entropy and free energy data for nine hydrocarbons of high molecular weight, J. Am. Chem. Soc., 1949, 71, 3386-3389. [all data]

Verdonk, 1938
Verdonk, G., Calorimetric analysis of paraffins - Contributions to the general subject of "calorimetric analysis" by J. Straub and R.N.M.A. Malataux, Chem. Weekblad, 1938, 35, 741-743. [all data]

Hoehne, 1981
Hoehne, G.W.H., Transitions of n-alkanes above the melting point, Polym. Bull. (Berlin), 1981, 6, 41-46. [all data]


Notes

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