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Ethane

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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:
DH - Eugene S. Domalski and Elizabeth D. Hearing
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny, director
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tboil184.6 ± 0.6KAVGN/AAverage of 23 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus101.KN/AStreng, 1971Uncertainty assigned by TRC = 1. K; TRC
Tfus89.2KN/ATimmermans, 1935Uncertainty assigned by TRC = 1.5 K; TRC
Quantity Value Units Method Reference Comment
Ttriple91. ± 6.KAVGN/AAverage of 10 values; Individual data points
Quantity Value Units Method Reference Comment
Ptriple0.000011barN/AYounglove and Ely, 1987Uncertainty assigned by TRC = 5.×10-9 bar; TRC
Quantity Value Units Method Reference Comment
Tc305.3 ± 0.3KAVGN/AAverage of 41 out of 46 values; Individual data points
Quantity Value Units Method Reference Comment
Pc49. ± 1.barAVGN/AAverage of 28 out of 29 values; Individual data points
Quantity Value Units Method Reference Comment
Vc0.147 ± 0.002l/molAVGN/AAverage of 6 values; Individual data points
Quantity Value Units Method Reference Comment
rhoc6.9 ± 0.4mol/lAVGN/AAverage of 19 values; Individual data points
Quantity Value Units Method Reference Comment
Deltavap9.76kJ/molN/AMajer and Svoboda, 1985 

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Method Reference Comment
14.703184.1N/AWitt and Kemp, 1937DH
15.3288.AStephenson and Malanowski, 1987Based on data from 273. - 305. K.; AC
15.7170.AStephenson and Malanowski, 1987Based on data from 154. - 185. K.; AC
17.7114.AStephenson and Malanowski, 1987Based on data from 95. - 129. K.; AC
14.9214.AStephenson and Malanowski, 1987Based on data from 185. - 229. K.; AC
14.9259.AStephenson and Malanowski, 1987Based on data from 228. - 274. K.; AC
17.1129.N/ACarruth and Kobayashi, 1973Based on data from 91. - 144. K.; AC
14.7210.N/AReid, 1972AC
14.7184.N/AWitt and Kemp, 1937AC
15.3185.N/ALoomis and Walters, 1926Based on data from 136. - 200. K.; AC

Enthalpy of vaporization

ΔvapH = A exp(-βTr) (1 − Tr)β
    ΔvapH = Enthalpy of vaporization (at saturation pressure) (kJ/mol)
    Tr = reduced temperature (T / Tc)

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Temperature (K) A (kJ/mol) beta Tc (K) Reference
289. - 301.29.430.3696305.4Majer and Svoboda, 1985

Entropy of vaporization

DeltavapS (J/mol*K) Temperature (K) Reference Comment
79.87184.1Witt and Kemp, 1937DH

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
91.33 - 144.134.50706791.3-6.422Carruth and Kobayashi, 1973Coefficents calculated by NIST from author's data.
135.74 - 199.913.93835659.739-16.719Loomis and Walters, 1926Coefficents calculated by NIST from author's data.

Enthalpy of sublimation

DeltasubH (kJ/mol) Temperature (K) Method Reference Comment
22.685.N/ARegnier, 1972Based on data from 80. - 90. K.; AC
20.590.BBondi, 1963AC

Enthalpy of fusion

DeltafusH (kJ/mol) Temperature (K) Reference Comment
0.58390.341Atake and Chihara, 1976Triple point.; DH
2.7989.5Domalski and Hearing, 1996AC
0.5890.3Atake and Chihara, 1976AC

Entropy of fusion

DeltafusS (J/mol*K) Temperature (K) Reference Comment
6.4690.341Atake and Chihara, 1976Triple; DH

Enthalpy of phase transition

DeltaHtrs (kJ/mol) Temperature (K) Initial Phase Final Phase Reference Comment
2.28289.813crystaline, IIcrystaline, IAtake and Chihara, 1976DH
2.85789.87crystaline, IliquidWitt and Kemp, 1937DH
2.79389.50crystaline, IliquidWiebe, Hubbard, et al., 1930DH
2.437589.77crystaline, IIcrystaline, IRoder, 1976DH

Entropy of phase transition

DeltaStrs (J/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
25.4889.813crystaline, IIcrystaline, IAtake and Chihara, 1976DH
31.889.87crystaline, IliquidWitt and Kemp, 1937DH
31.289.50crystaline, IliquidWiebe, Hubbard, et al., 1930DH
27.1589.77crystaline, IIcrystaline, IRoder, 1976DH

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.

Streng, 1971
Streng, A.G., Miscibility and Compatibility of Some Liquid and Solidified Gases at Low Temperature, J. Chem. Eng. Data, 1971, 16, 357. [all data]

Timmermans, 1935
Timmermans, J., Researches in Stoichiometry. I. The Heat of Fusion of Organic Compounds., Bull. Soc. Chim. Belg., 1935, 44, 17-40. [all data]

Younglove and Ely, 1987
Younglove, B.A.; Ely, J.F., Thermophysical Properties of Fluids II. Methane, Ethane, Propane, Isobutane, and Normal Butane, J. Phys. Chem. Ref. Data, 1987, 16, 577. [all data]

Majer and Svoboda, 1985
Majer, V.; Svoboda, V., Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation, Blackwell Scientific Publications, Oxford, 1985, 300. [all data]

Witt and Kemp, 1937
Witt, R.K.; Kemp, J.D., The heat capacity of ethane from 15°K to the boiling point. The heat of fusion and the heat of vaporization, J. Am. Chem. Soc., 1937, 59, 273-276. [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]

Carruth and Kobayashi, 1973
Carruth, Grant F.; Kobayashi, Riki, Vapor pressure of normal paraffins ethane through n-decane from their triple points to about 10 mm mercury, J. Chem. Eng. Data, 1973, 18, 2, 115-126, https://doi.org/10.1021/je60057a009 . [all data]

Reid, 1972
Reid, Robert C., Handbook on vapor pressure and heats of vaporization of hydrocarbons and related compounds, R. C. Wilhort and B. J. Zwolinski, Texas A Research Foundation. College Station, Texas(1971). 329 pages.$10.00, AIChE J., 1972, 18, 6, 1278-1278, https://doi.org/10.1002/aic.690180637 . [all data]

Loomis and Walters, 1926
Loomis, A.G.; Walters, J.E., THE VAPOR PRESSURE OF ETHANE NEAR THE NORMAL BOILING POINT 1, J. Am. Chem. Soc., 1926, 48, 8, 2051-2055, https://doi.org/10.1021/ja01419a006 . [all data]

Regnier, 1972
Regnier, J., J. Chim. Phys. Phys.-Chim. Biol., 1972, 69, 6, 942. [all data]

Bondi, 1963
Bondi, A., Heat of Siblimation of Molecular Crystals: A Catalog of Molecular Structure Increments., J. Chem. Eng. Data, 1963, 8, 3, 371-381, https://doi.org/10.1021/je60018a027 . [all data]

Atake and Chihara, 1976
Atake, T.; Chihara, H., Calorimetric study of the phase changes in solid ethane, Chem. Lett., 1976, (7), 683-688. [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]

Wiebe, Hubbard, et al., 1930
Wiebe, R.; Hubbard, K.H.; Brevoort, M.J., The heat capacity of saturated liquid ethane from the boiling point to the critical temperature and heat fusion of the solid, J. Am. Chem. Soc., 1930, 52, 611-622. [all data]

Roder, 1976
Roder, H.M., The heats of transition of solid ethane, J. Chem. Phys., 1976, 65, 1371-1373. [all data]


Notes

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