Ethanol

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Gas 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:
DRB - Donald R. Burgess, Jr.
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Quantity Value Units Method Reference Comment
ΔfH°gas-56.0 ± 0.5kcal/molAVGN/AAverage of 9 values; Individual data points
Quantity Value Units Method Reference Comment
ΔcH°gas-326.56 ± 0.1kcal/molCmRossini, 1932Flame Calorimetry; Corresponding ΔfHºgas = -66.491 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS

Constant pressure heat capacity of gas

Cp,gas (cal/mol*K) Temperature (K) Reference Comment
8.87250.Thermodynamics Research Center, 1997p=1 bar. Recommended entropies and heat capacities are in close agreement with other statistically calculated values [ Zhuravlev E.Z., 1959, Chermin H.A.G., 1961, Green J.H.S., 1961, Green J.H.S., 1961, 2, Chao J., 1986, Gurvich, Veyts, et al., 1989]. Please also see Chao J., 1986, 2.; GT
9.967100.
11.22150.
12.43200.
14.69273.15
15.59 ± 0.033298.15
15.65300.
19.41400.
22.89500.
25.870600.
28.401700.
30.574800.
32.459900.
34.1011000.
35.5351100.
36.7881200.
37.8801300.
38.8381400.
39.6771500.
41.351750.
42.592000.
43.502250.
44.192500.
44.72750.
45.23000.

Constant pressure heat capacity of gas

Cp,gas (cal/mol*K) Temperature (K) Reference Comment
12.28 ± 0.12200.Stromsoe E., 1970Experimental data [ Bennewitz K., 1938, Eucken A., 1948, Barrow G.M., 1952, Sinke G.C., 1953, Halford J.O., 1957] are collected in ref. [ Green J.H.S., 1961]. Ideal gas heat capacities are given by [ Stromsoe E., 1970] as a linear function Cp=f1*(a+bT). This expression approximates the experimental values with the average deviation of 1.09 J/mol*K. The accuracy of the experimental heat capacities [ Stromsoe E., 1970] is estimated as less than 0.3%. Please also see Green J.H.S., 1961, Counsell J.F., 1970.; GT
14.89 ± 0.13279.
14.84 ± 0.10280.
17.48350.01
18.09 ± 0.26356.55
17.82360.00
18.26 ± 0.26361.75
18.05367.9
18.16370.01
18.58 ± 0.26371.85
18.51380.00
19.07 ± 0.26387.25
19.12 ± 0.26388.85
19.22400.08
19.60410.16
19.93422.
20.10425.09
20.54 ± 0.26433.25
21.03437.
20.86 ± 0.26443.35
20.95450.08
21.78475.12
21.80476.
22.04 ± 0.26480.45
23.76 ± 0.26534.35
24.22 ± 0.26548.75
24.97 ± 0.26572.25
25.58 ± 0.26591.25

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.

Rossini, 1932
Rossini, F.D., The heats of combustion of methyl and ethyl alcohols, J. Res. NBS, 1932, 8, 119-139. [all data]

Thermodynamics Research Center, 1997
Thermodynamics Research Center, Selected Values of Properties of Chemical Compounds., Thermodynamics Research Center, Texas A&M University, College Station, Texas, 1997. [all data]

Zhuravlev E.Z., 1959
Zhuravlev E.Z., Isotopic effect on thermodynamic functions of some organic deuterocompounds in the ideal gas state, Tr. Khim. i Khim. Tekhnol., 1959, 2, 475-485. [all data]

Chermin H.A.G., 1961
Chermin H.A.G., Thermo data for petrochemicals. Part 28. Gaseous normal alcohols. The important thermo properties are presented for all the gaseous normal alcohols from methanol through n-decanol, Petrol. Refiner, 1961, 40 (4), 127-130. [all data]

Green J.H.S., 1961
Green J.H.S., Thermodynamic properties of organic oxygen compounds. Part 5. Ethyl alcohol, Trans. Faraday Soc., 1961, 57, 2132-2137. [all data]

Green J.H.S., 1961, 2
Green J.H.S., Thermodynamic properties of the normal alcohols C1-C12, J. Appl. Chem., 1961, 11, 397-404. [all data]

Chao J., 1986
Chao J., Ideal gas thermodynamic properties of simple alkanols, Int. J. Thermophys., 1986, 7, 431-442. [all data]

Gurvich, Veyts, et al., 1989
Gurvich, L.V.; Veyts, I.V.; Alcock, C.B., Thermodynamic Properties of Individual Substances, 4th ed.; Vols. 1 and 2, Hemisphere, New York, 1989. [all data]

Chao J., 1986, 2
Chao J., Thermodynamic properties of key organic oxygen compounds in the carbon range C1 to C4. Part 2. Ideal gas properties, J. Phys. Chem. Ref. Data, 1986, 15, 1369-1436. [all data]

Stromsoe E., 1970
Stromsoe E., Heat capacity of alcohol vapors at atmospheric pressure, J. Chem. Eng. Data, 1970, 15, 286-290. [all data]

Bennewitz K., 1938
Bennewitz K., Molar heats of vapor organic compounds, Z. Phys. Chem. (Leipzig), 1938, B39, 126-144. [all data]

Eucken A., 1948
Eucken A., Rotational hindrance in ether and alcohol molecules on the basis of heat capacity determinations, Z. Elektrochem., 1948, 52, 195-204. [all data]

Barrow G.M., 1952
Barrow G.M., Heat capacity, gas imperfection, infrared spectra, and internal rotation barriers of ethyl alcohol, J. Chem. Phys., 1952, 20, 1739-1744. [all data]

Sinke G.C., 1953
Sinke G.C., The heat capacity of organic vapors. VIII. Data for some aliphatic alcohols using an improved flow calorimeter requiring only 25 ml of sample, J. Am. Chem. Soc., 1953, 75, 1815-1818. [all data]

Halford J.O., 1957
Halford J.O., Standard heat capacities of gaseous methanol, ethanol, methane and ethane at 279 K by thermal conductivity, J. Phys. Chem., 1957, 61, 1536-1539. [all data]

Counsell J.F., 1970
Counsell J.F., Thermodynamic properties of organic oxygen compounds. 24. Vapor heat capacities and enthalpies of vaporization of ethanol, 2-methyl-1-propanol, and 1-pentanol, J. Chem. Thermodyn., 1970, 2, 367-372. [all data]

Notes

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