Home Symbol which looks like a small house Up Solid circle with an upward pointer in it


Data at NIST subscription sites:

NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.

Gas phase thermochemistry data

Go To: Top, 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:
ALS - H.Y. Afeefy, J.F. Liebman, and S.E. Stein
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Deltafgas-184.2 ± 0.71kJ/molCmPell and Pilcher, 1965ALS
Deltacgas-2533.2 ± 0.67kJ/molCmPell and Pilcher, 1965Corresponding «DELTA»fgas = -184.2 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
gas301.7 ± 1.7J/mol*KN/AClegg G.A., 1968Other third-law entropy values at 298.15 K evaluated from calorimetric data are 299.1 J/mol*K [ Chao J., 1986] and 288(1) J/mol*K [ Lebedev B.V., 1978].; GT

Constant pressure heat capacity of gas

Cp,gas (J/mol*K)Temperature (K)ReferenceComment
38.3250.Dorofeeva O.V., 1992p=1 bar. Selected thermodynamic functions agree well with results of other statistical calculations [ Scott D.W., 1970, Chao J., 1986].; GT
76.6 ± 1.0298.15

Constant pressure heat capacity of gas

Cp,gas (J/mol*K)Temperature (K)ReferenceComment
85.13 ± 0.17328.15Hossenlopp I.A., 1981GT
91.36 ± 0.18349.15
106.12 ± 0.21399.15
120.39 ± 0.24449.15
133.68 ± 0.27500.15


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.

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]

Clegg G.A., 1968
Clegg G.A., Thermodynamics of polymerization of heterocyclic compounds. II. The heat capacity, entropy, enthalpy and free energy of polytetrahydrofuran, Polymer, 1968, 9, 501-511. [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]

Lebedev B.V., 1978
Lebedev B.V., Thermodynamic properties of tetrahydrofuran from 8 to 322 K, J. Chem. Thermodyn., 1978, 10, 321-329. [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]

Scott D.W., 1970
Scott D.W., Tetrahydrofuran: vibrational assignment, chemical thermodynamic properties, and vapor pressure, J. Chem. Thermodyn., 1970, 2, 833-837. [all data]

Hossenlopp I.A., 1981
Hossenlopp I.A., Vapor heat capacities and enthalpies of vaporization of six organic compounds, J. Chem. Thermodyn., 1981, 13, 405-414. [all data]


Go To: Top, Gas phase thermochemistry data, References