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Octadecane

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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 - R.L. Brown and S.E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, M. Frenkel director
AC - W.E. Acree, Jr., J.S. Chickos
ALS - H.Y. Afeefy, J.F. Liebman, and S.E. Stein
DH - E.S. Domalski and E.D. Hearing

Quantity Value Units Method Reference Comment
Tboil589.3KN/AWeast and Grasselli, 1989BS
Tboil581.KN/AMatsui and Arakawa, 1932Uncertainty assigned by TRC = 3. K; TRC
Tboil581.65KN/AVon Braun and Sobecki, 1911Uncertainty assigned by TRC = 2.5 K; TRC
Tboil585.65KN/ASorabji, 1885Uncertainty assigned by TRC = 2. K; TRC
Quantity Value Units Method Reference Comment
Tfus301.0 ± 0.7KAVGN/AAverage of 35 out of 37 values; Individual data points
Quantity Value Units Method Reference Comment
Ttriple301.KN/AMesserly, Guthrie, et al., 1967Uncertainty assigned by TRC = 0.04 K; TRC
Ttriple301.3KN/AParks, Moore, et al., 1949Uncertainty assigned by TRC = 0.2 K; TRC
Quantity Value Units Method Reference Comment
Tc747. ± 3.KN/AAmbrose and Tsonopoulos, 1995 
Tc745.8KN/AAnselme, Gude, et al., 1990Uncertainty assigned by TRC = 3.4 K; TRC
Tc747.7KN/ARosenthal and Teja, 1989Uncertainty assigned by TRC = 1. K; TRC
Tc747.2KN/ATeja, Lee, et al., 1989TRC
Tc756.15KN/AAmbrose, 1963Uncertainty assigned by TRC = 0.005 K; TRC
Quantity Value Units Method Reference Comment
Pc13. ± 2.barN/AAmbrose and Tsonopoulos, 1995 
Pc12.92barN/ARosenthal and Teja, 1989Uncertainty assigned by TRC = 1.10 bar; TRC
Quantity Value Units Method Reference Comment
Vc1.189l/molN/AAmbrose and Tsonopoulos, 1995 
Quantity Value Units Method Reference Comment
rhoc0.8 ± 0.2mol/lN/AAmbrose and Tsonopoulos, 1995 
rhoc0.841mol/lN/AAnselme, Gude, et al., 1990Uncertainty assigned by TRC = 0.02 mol/l; TRC
Quantity Value Units Method Reference Comment
Deltavap92. ± 1.kJ/molAVGN/AAverage of 8 values; Individual data points
Quantity Value Units Method Reference Comment
Deltasub152.7kJ/molCMorawetz, 1972AC

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Method Reference Comment
74.4428.N/AMorgan and Kobayashi, 1994Based on data from 413. - 588. K.; AC
64.8516.AStephenson and Malanowski, 1987Based on data from 501. - 548. K.; AC
84.3333.A,GSStephenson and Malanowski, 1987Based on data from 318. - 361. K. See also Macknick and Prausnitz, 1979.; AC
80.0348.GSAllemand, Jose, et al., 1986Based on data from 335. - 439. K.; AC
72.5343.GCNováková and Novák, 1977AC
71.8353.GCNováková and Novák, 1977AC
71.1363.GCNováková and Novák, 1977AC
70.5373.GCNováková and Novák, 1977AC
69.8383.GCNováková and Novák, 1977AC
78.1460.MEUbbelohde, 1938Based on data from 447. - 474. K.; AC
69.4462.N/AKrafft, 1882Based on data from 447. - 590. K. See also Boublik, Fried, et al., 1984.; AC

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

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Temperature (K) A B C Reference Comment
447.7 - 590.4.332092068.963-111.927Krafft, 1882Coefficents calculated by NIST from author's data.

Enthalpy of sublimation

DeltasubH (kJ/mol) Temperature (K) Method Reference Comment
153.1 ± 5.0288.VBradley and Shellard, 1949hfusion=14.94±2.0 kcal/mol; ALS
153. ± 5.293.MEBradley and Shellard, 1949Based on data from 288. - 298. K. See also Jones, 1960 and Cox and Pilcher, 1970.; AC

Enthalpy of fusion

DeltafusH (kJ/mol) Temperature (K) Method Reference Comment
61.500301.5N/ABarbillon, Schuffenecker, et al., 1991DH
60.760301.0N/AKolesnikov and Syunyaev, 1985DH
61.706301.33N/AMesserly, Guthrie, et al., 1967, 2DH
60.1301.1DSCMondieig, Rajabalee, et al., 2004AC
61.5301.3N/ADomalski and Hearing, 1996AC
60.484301.3N/AParks, Moore, et al., 1949, 2DH

Entropy of fusion

DeltafusS (J/mol*K) Temperature (K) Reference Comment
201.9301.0Kolesnikov and Syunyaev, 1985DH
204.6301.33Messerly, Guthrie, et al., 1967, 2DH
200.7301.3Parks, Moore, et al., 1949, 2DH

Enthalpy of phase transition

DeltaHtrs (kJ/mol) Temperature (K) Initial Phase Final Phase Reference Comment
60.670300.7crystaline, IliquidClaudy and Letoffe, 1991DH
61.379301.35crystaline, IliquidSchaerer, Busso, et al., 1955DH

Entropy of phase transition

DeltaStrs (J/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
203.6301.35crystaline, IliquidSchaerer, Busso, et al., 1955DH

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.

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]

Matsui and Arakawa, 1932
Matsui, M.; Arakawa, S., Mem. Coll. Sci., Univ. Kyoto, Ser. A, 1932, 15, 189. [all data]

Von Braun and Sobecki, 1911
Von Braun, J.; Sobecki, W., Chem. Ber., 1911, 44, 1470. [all data]

Sorabji, 1885
Sorabji, K.B.B., J. Chem. Soc., 1885, 47, 37-41. [all data]

Messerly, Guthrie, et al., 1967
Messerly, J.F.; Guthrie, G.B.; Todd, S.S.; Finke, H.L., Low-Temperature Thermal Data for n-Pentane, n-Heptadecane and n-Octadecane. Revised Thermodynamic Functions for ther n-Alkanes, C5 - C18, J. Chem. Eng. Data, 1967, 12, 338-46. [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, 10, 3386, https://doi.org/10.1021/ja01178a034 . [all data]

Ambrose and Tsonopoulos, 1995
Ambrose, D.; Tsonopoulos, C., Vapor-Liquid Critical Properties of Elements and Compounds. 2. Normal Alkenes, J. Chem. Eng. Data, 1995, 40, 531-546. [all data]

Anselme, Gude, et al., 1990
Anselme, M.J.; Gude, M.; Teja, A.S., The Critical Temperatures and Densities of the n-Alkanes from Pentane to Octadecane, Fluid Phase Equilib., 1990, 57, 317-26. [all data]

Rosenthal and Teja, 1989
Rosenthal, D.J.; Teja, A.S., The Critical Properties of n-Alkanes Using a Low-Residence Time Flow Apparatus, AIChE J., 1989, 35, 1829. [all data]

Teja, Lee, et al., 1989
Teja, A.S.; Lee, R.J.; Rosenthal, D.J.; Anselme, M.J., Correlation of the Critical Properties of Alkanes and Alkanols in 5th IUPAC Conference on Alkanes and AlkanolsGradisca, 1989. [all data]

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

Morawetz, 1972
Morawetz, Ernst, Correlation of sublimation enthalpies at 298.15 K with molecular structure for planar aromatic hydrocarbons, The Journal of Chemical Thermodynamics, 1972, 4, 3, 461-467, https://doi.org/10.1016/0021-9614(72)90030-4 . [all data]

Morgan and Kobayashi, 1994
Morgan, David L.; Kobayashi, Riki, Direct vapor pressure measurements of ten n-alkanes m the 10-C28 range, Fluid Phase Equilibria, 1994, 97, 211-242, https://doi.org/10.1016/0378-3812(94)85017-8 . [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]

Macknick and Prausnitz, 1979
Macknick, A. Brian; Prausnitz, John M., Vapor pressures of high-molecular-weight hydrocarbons, J. Chem. Eng. Data, 1979, 24, 3, 175-178, https://doi.org/10.1021/je60082a012 . [all data]

Allemand, Jose, et al., 1986
Allemand, Nadine; Jose, Jacques; Merlin, J.C., Mesure des pressions de vapeur d'hydrocarbures C10 A C18n-alcanes etn-alkylbenzenes dans le domaine 3-1000 pascal, Thermochimica Acta, 1986, 105, 79-90, https://doi.org/10.1016/0040-6031(86)85225-X . [all data]

Nováková and Novák, 1977
Nováková, N.; Novák, J., Measurement of heats of vaporization by means of a gas chromatograph, Journal of Chromatography A, 1977, 135, 1, 13-24, https://doi.org/10.1016/S0021-9673(00)86297-4 . [all data]

Ubbelohde, 1938
Ubbelohde, A.R., Structure and thermodynamic properties of long-chain compounds, Trans. Faraday Soc., 1938, 34, 282, https://doi.org/10.1039/tf9383400282 . [all data]

Krafft, 1882
Krafft, F., Ueber neunzehn höhere Normalparaffine Cn H2n + 2 und ein einfaches Volumgesetz für den tropfbar flüssigen Zustand. I, Ber. Dtsch. Chem. Ges., 1882, 15, 2, 1687-1711, https://doi.org/10.1002/cber.18820150258 . [all data]

Boublik, Fried, et al., 1984
Boublik, T.; Fried, V.; Hala, E., The Vapour Pressures of Pure Substances: Selected Values of the Temperature Dependence of the Vapour Pressures of Some Pure Substances in the Normal and Low Pressure Region, 2nd ed., Elsevier, New York, 1984, 972. [all data]

Bradley and Shellard, 1949
Bradley, R.S.; Shellard, A.D., The rate of evaporation of droplets. III. Vapour pressures and rates of evaporation of straight-chain paraffin hydrocarbons, Proc. Roy. Soc. London A, 1949, 198, 239-251. [all data]

Jones, 1960
Jones, A.H., Sublimation Pressure Data for Organic Compounds., J. Chem. Eng. Data, 1960, 5, 2, 196-200, https://doi.org/10.1021/je60006a019 . [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]

Barbillon, Schuffenecker, et al., 1991
Barbillon, P.; Schuffenecker, L.; Dellacherie, J.; Balesdent, D.; Dirande, M., Variation d'enthalpie subie de 260 K a 340 K par les n-paraffines, comprises entrel'octadecane et l'hexacosane, J. Chim. Phys. Phys.-Chim. Biol., 1991, 88, 91-113. [all data]

Kolesnikov and Syunyaev, 1985
Kolesnikov, S.I.; Syunyaev, Z.I., Phase transitions in the melting and crystallization of n-C18H38 and n-C20H42, Zhur. Prikl. Khim. (Leningrad), 1985, 58(10), 2267-2271. [all data]

Messerly, Guthrie, et al., 1967, 2
Messerly, J.F.; Guthrie, G.B.; Todd, S.S.; Finke, H.L., Low-temperature thermal data for n-pentane, n-heptadecane, and n-octadecane, J. Chem. Eng. Data, 1967, 12, 338-346. [all data]

Mondieig, Rajabalee, et al., 2004
Mondieig, D.; Rajabalee, F.; Metivaud, V.; Oonk, H.A.J.; Cuevas-Diarte, M.A., n -Alkane Binary Molecular Alloys, Chem. Mater., 2004, 16, 5, 786-798, https://doi.org/10.1021/cm031169p . [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]

Parks, Moore, et al., 1949, 2
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]

Claudy and Letoffe, 1991
Claudy, P.; Letoffe, J.M., Phase transitions in even n-alkanes CnH2n+2, n = 16-28. Characterization by differential calorimetric analysis and by thermooptical analysis. Effect of deuteration, Calorim. Anal. Therm., 1991, 22, 281-290. [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]


Notes

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