Ethylene oxide

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

Quantity Value Units Method Reference Comment
Δfliquid-95.7 ± 1.3kJ/molCcbMoureu and Dode, 1937Reanalyzed by Cox and Pilcher, 1970, Original value = -95.4 kJ/mol; ALS
Quantity Value Units Method Reference Comment
Δcliquid-1262.9 ± 1.3kJ/molCcbMoureu and Dode, 1937Reanalyzed by Cox and Pilcher, 1970, Original value = -1264. kJ/mol; Corresponding Δfliquid = -95.73 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Quantity Value Units Method Reference Comment
liquid149.45J/mol*KN/AGiauque and Gordon, 1949DH

Constant pressure heat capacity of liquid

Cp,liquid (J/mol*K) Temperature (K) Reference Comment
86.90285.Giauque and Gordon, 1949T = 15 to 283 K.; DH

Phase change data

Go To: Top, Condensed phase thermochemistry data, References, Notes

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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
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
Tboil283.7KN/AMajer and Svoboda, 1985 
Tboil286.15KN/AMoureu and Dode, 1937, 2Uncertainty assigned by TRC = 1.5 K; TRC
Tboil283.85KN/ATimmermans and Hennaut-Roland, 1937Uncertainty assigned by TRC = 0.4 K; TRC
Tboil283.88KN/AMaass and Boomer, 1922Uncertainty assigned by TRC = 0.2 K; TRC
Tboil286.KN/AVon Auwers and Eisenlohr, 1910Uncertainty assigned by TRC = 4. K; TRC
Quantity Value Units Method Reference Comment
Tfus160.6KN/AMcDonald, Shrader, et al., 1959Uncertainty assigned by TRC = 0.07 K; TRC
Tfus161.45KN/ATimmermans and Hennaut-Roland, 1937Uncertainty assigned by TRC = 0.4 K; TRC
Tfus161.9KN/AMaass and Boomer, 1922Uncertainty assigned by TRC = 0.6 K; TRC
Quantity Value Units Method Reference Comment
Ttriple160.65KN/AWilhoit, Chao, et al., 1985Uncertainty assigned by TRC = 0.05 K; TRC
Ttriple160.65KN/AGiauque and Gordon, 1949, 2Uncertainty assigned by TRC = 0.02 K; TRC
Quantity Value Units Method Reference Comment
Tc468.9KN/AWalters and Smith, 1952Uncertainty assigned by TRC = 1.11 K; TRC
Tc469.0KN/AHess and Tilton, 1950Uncertainty assigned by TRC = 1. K; TRC
Tc465.2KN/AMaass and Boomer, 1922Uncertainty assigned by TRC = 2. K; TRC
Quantity Value Units Method Reference Comment
Pc72.33barN/AWalters and Smith, 1952Uncertainty assigned by TRC = 0.6894 bar; TRC
Pc71.91barN/AHess and Tilton, 1950Uncertainty assigned by TRC = 0.7584 bar; TRC
Quantity Value Units Method Reference Comment
ρc7.13mol/lN/AWalters and Smith, 1952Uncertainty assigned by TRC = 0.23 mol/l; TRC
ρc7.26mol/lN/APost, 1950Uncertainty assigned by TRC = 0.23 mol/l; TRC
Quantity Value Units Method Reference Comment
Δvap25.51kJ/molN/AMajer and Svoboda, 1985 
Δvap25.9kJ/molAStephenson and Malanowski, 1987Based on data from 283. to 385. K.; AC

Enthalpy of vaporization

ΔvapH (kJ/mol) Temperature (K) Method Reference Comment
25.527283.66N/AGiauque and Gordon, 1949P = 101.325 kPa; DH
25.54283.7N/AMajer and Svoboda, 1985 
26.8269.AStephenson and Malanowski, 1987Based on data from 239. to 284. K. See also McDonald, Shrader, et al., 1959, 2 and Dykyj, 1970.; AC
26.8269.AStephenson and Malanowski, 1987Based on data from 223. to 284. K. See also Giauque and Gordon, 1949.; AC
25.5 ± 0.3283.66VGiauque and Gordon, 1949, 3ALS
26.9290.N/AMoor, Kanep, et al., 1937Based on data from 268. to 313. K.; AC

Entropy of vaporization

ΔvapS (J/mol*K) Temperature (K) Reference Comment
89.99283.66Giauque and Gordon, 1949P; DH

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
182.59 to 283.594.3861115.1-29.015McDonald, Shrader, et al., 1959, 2 
273.4 to 304.95.846962022.8362.656Coles and Popper, 1950Coefficents calculated by NIST from author's data.

Enthalpy of fusion

ΔfusH (kJ/mol) Temperature (K) Reference Comment
5.1731160.65Giauque and Gordon, 1949DH
5.17160.7Domalski and Hearing, 1996AC

Entropy of fusion

ΔfusS (J/mol*K) Temperature (K) Reference Comment
32.20160.65Giauque and Gordon, 1949DH

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, Condensed phase thermochemistry data, Phase change data, Notes

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

Moureu and Dode, 1937
Moureu, H.; Dode, M., Chaleurs de formation de l'oxyde d'ethylene, de l'ethanediol et de quelques homologues, Bull. Soc. Chim. France, 1937, 4, 637-647. [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]

Giauque and Gordon, 1949
Giauque, W.F.; Gordon, J., The entropy of ethylene oxide. Heat capacity from 14 to 285K. Vapor pressure. Heats of fusion and vaporization, J. Am. Chem. Soc., 1949, 71, 2176-2181. [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]

Moureu and Dode, 1937, 2
Moureu, H.; Dode, M., Heats of Formation of Ethylene Oxide, of Ethandiol and oof Several Homologs, Bull. Soc. Chim. Fr., 1937, 4, 637-47. [all data]

Timmermans and Hennaut-Roland, 1937
Timmermans, J.; Hennaut-Roland, M., Works from International Bureau at Physical-Chemical Standards. VIII. Physical constants of 20 organic compounds, J. Chim. Phys. Phys.-Chim. Biol., 1937, 34, 693. [all data]

Maass and Boomer, 1922
Maass, O.; Boomer, E.H., Vapor Densities at Low Pressures and Over and Extended Temperature Range. I. The Properties of Ethylene Oxide Compared to Oxygen Compounds of Similar Molecular Weight, J. Am. Chem. Soc., 1922, 44, 8, 1709-1728, https://doi.org/10.1021/ja01429a013 . [all data]

Von Auwers and Eisenlohr, 1910
Von Auwers, K.; Eisenlohr, F., Spectrochemical studies. I. Refraction & dispersion of hydrocarbon aldehydes, ketones, acids & esters with i pair of conjug. double bonds, J. Prakt. Chem., 1910, 82, 65. [all data]

McDonald, Shrader, et al., 1959
McDonald, R.A.; Shrader, S.A.; Stull, D.R., Vapor Pressures and Freezing Points of 30 Organics, J. Chem. Eng. Data, 1959, 4, 311. [all data]

Wilhoit, Chao, et al., 1985
Wilhoit, R.C.; Chao, J.; Hall, K.R., Thermodynamic Properties of Key Organic Compounds in the Carbon Range C1 to C4. Part 1. Properties of Condensed Phases, J. Phys. Chem. Ref. Data, 1985, 14, 1. [all data]

Giauque and Gordon, 1949, 2
Giauque, W.F.; Gordon, J., The entropy of ethylene oxide heat capacity from 14 to 285c vapor pressure heats of fusion and vaporization, J. Am. Chem. Soc., 1949, 71, 2176. [all data]

Walters and Smith, 1952
Walters, C.J.; Smith, J.M., Volumetric Behaviour and Thermodynamic Properties of Ethylene Oxide, Chem. Eng. Prog., 1952, 48, 337. [all data]

Hess and Tilton, 1950
Hess, L.G.; Tilton, V.V., Ethylene Oxide - Hazards and Methods of Handling., Ind. Eng. Chem., 1950, 42, 1251-8. [all data]

Post, 1950
Post, R.G., , Unpublished Rep., Chem. Eng. No. 362, 1950. [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]

McDonald, Shrader, et al., 1959, 2
McDonald, R.A.; Shrader, S.A.; Stull, D.R., Vapor Pressures and Freezing Points of Thirty Pure Organic Compounds., J. Chem. Eng. Data, 1959, 4, 4, 311-313, https://doi.org/10.1021/je60004a009 . [all data]

Dykyj, 1970
Dykyj, J., Petrochemica, 1970, 10, 2, 51. [all data]

Giauque and Gordon, 1949, 3
Giauque, W.F.; Gordon, J., The entropy of ethylene oxide. Heat capacity from 14 to 285°K. Vapor pressure. Heats of fusion and vaporization, J. Am. Chem. Soc., 1949, 71, 2176-21. [all data]

Moor, Kanep, et al., 1937
Moor, V.G.; Kanep, E.K.; Dobkin, I.E., Trans. Exptl. Research Lab. Khemgas, Materials on Cracking and Chemical Treatment of Cracking Products U.S.S.R., 1937, 3, 320. [all data]

Coles and Popper, 1950
Coles, K.F.; Popper, Felix, Vapor-Liquid Equilibria. Ethylene Oxide - Acetaldehyde and Ethylene Oxide - Water Systems, Ind. Eng. Chem., 1950, 42, 7, 1434-1438, https://doi.org/10.1021/ie50487a046 . [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]


Notes

Go To: Top, Condensed phase thermochemistry data, Phase change data, References