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Ethylene oxide

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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:
ALS - H.Y. Afeefy, J.F. Liebman, and S.E. Stein
DRB - D.R. Burgess
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Quantity Value Units Method Reference Comment
Deltafgas-52.64kJ/molReviewChase, 1998Data last reviewed in September, 1965
Deltafgas-52.63 ± 0.63kJ/molCmPell and Pilcher, 1965ALS
Deltafgas-70.2kJ/molN/AMoureu and Dode, 1937Value computed using «DELTA»fHliquid° value of -95.7±1.3 kj/mol from Moureu and Dode, 1937 and «DELTA»vapH° value of 25.51 kj/mol from missing citation.; DRB
Quantity Value Units Method Reference Comment
Deltacgas-1306.0 ± 0.59kJ/molCmPell and Pilcher, 1965Corresponding «DELTA»fgas = -52.63 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Deltacgas-1307.7 ± 0.84kJ/molCcbCrog and Hunt, 1942Corresponding «DELTA»fgas = -50.96 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Quantity Value Units Method Reference Comment
gas,1 bar243.00J/mol*KReviewChase, 1998Data last reviewed in September, 1965

Constant pressure heat capacity of gas

Cp,gas (J/mol*K) Temperature (K) Reference Comment
33.2650.Dorofeeva O.V., 1992p=1 bar. Selected values are in good agreement with other statistically calculated values [ Godnev I., 1948, Gunthard H., 1948, Kobe K.A., 1950, Sundaram S., 1963, Ramasamy R., 1978, Chao J., 1986].; GT
33.28100.
33.82150.
36.19200.
43.71273.15
47.0 ± 1.0298.15
47.29300.
61.66400.
74.89500.
85.97600.
95.14700.
102.81800.
109.32900.
114.891000.
119.671100.
123.791200.
127.361300.
130.451400.
133.141500.

Constant pressure heat capacity of gas

Cp,gas (J/mol*K) Temperature (K) Reference Comment
49.37307.18Kistiakowsky G.B., 1940GT
53.51337.04
58.41371.23

Gas Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 298. - 1200.1200. - 6000.
A -23.25802131.3483
B 275.699713.80594
C -188.9729-2.645062
D 51.033500.175820
E 0.386930-30.03639
F -55.09156-158.3795
G 142.7777313.4276
H -52.63514-52.63514
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in September, 1965 Data last reviewed in September, 1965

References

Go To: Top, Gas phase thermochemistry data, Notes

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

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

Pell and Pilcher, 1965
Pell, A.S.; Pilcher, G., Measurements of heats of combustion by flame calorimetry. Part 3.-Ethylene oxide, trimethylene oxide, tetrahydrofuran and tetrahydropy, Trans. Faraday Soc., 1965, 61, 71-77. [all data]

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]

Crog and Hunt, 1942
Crog, R.S.; Hunt, H., Heats of combustion. II. The heats of combustion of ethyl methyl ketone and ethylene oxide, J. Phys. Chem., 1942, 46, 1162-1163. [all data]

Dorofeeva O.V., 1992
Dorofeeva O.V., Ideal gas thermodynamic properties of oxygen heterocyclic compounds. Part 1. Three-membered, four-membered and five-membered rings, Thermochim. Acta, 1992, 194, 9-46. [all data]

Godnev I., 1948
Godnev I., Thermodynamic functions of ethylene oxide, Zh. Fiz. Khim., 1948, 22, 801-803. [all data]

Gunthard H., 1948
Gunthard H., Thermodynamic properties of ethylene oxide, Helv. Chim. Acta, 1948, 31, 2128-2132. [all data]

Kobe K.A., 1950
Kobe K.A., Thermochemistry for the petrochemical industry. XIII. Some oxygenated hydrocarbons C1 and C2, Petrol. Refiner, 1950, 29 (9), 135-138. [all data]

Sundaram S., 1963
Sundaram S., Thermodynamic functions of some propellants, Z. Phys. Chem. (Frankfurt), 1963, 36, 376-377. [all data]

Ramasamy R., 1978
Ramasamy R., Centrifugal distortion constants and thermodynamic functions of ethylene oxide, ethylene oxide-d4, and ethylene sulfide, Curr. Sci., 1978, 47, 668-669. [all data]

Chao J., 1986
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]

Kistiakowsky G.B., 1940
Kistiakowsky G.B., Gaseous heat capacities. III, J. Chem. Phys., 1940, 8, 618-622. [all data]


Notes

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