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Cyclohexane

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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
Deltafgas-124.6kJ/molN/ASpitzer and Huffman, 1947Value computed using «DELTA»fHliquid° value of -157.7±1.8 kj/mol from Spitzer and Huffman, 1947 and «DELTA»vapH° value of 33.1 kj/mol from Prosen, Johnson, et al., 1946.; DRB
Deltafgas-123.1 ± 0.79kJ/molCcbProsen, Johnson, et al., 1946ALS
Deltafgas-123.3kJ/molN/AMoore, Renquist, et al., 1940Value computed using «DELTA»fHliquid° value of -156.4±1.3 kj/mol from Moore, Renquist, et al., 1940 and «DELTA»vapH° value of 33.1 kj/mol from Prosen, Johnson, et al., 1946.; DRB
Quantity Value Units Method Reference Comment
gas298.19J/mol*KN/ABeckett C.W., 1947Close value of S(298.15 K)=298.78(0.75) J/mol*K was obtained by [43ASTSZA] from calorimetric data.; GT

Constant pressure heat capacity of gas

Cp,gas (J/mol*K) Temperature (K) Reference Comment
34.0750.Dorofeeva O.V., 1986There is an appreciable difference (up to 3.0-4.5 J/mol*K) between selected values of S(T) and Cp(T) and earlier statistically calculated values [ Brickwedde F.G., 1946, Beckett C.W., 1947, Kilpatrick J.E., 1947, Lippincott E.R., 1966] at high temperatures. It is due to using the most reliable molecular constants in [ Dorofeeva O.V., 1986].; GT
42.59100.
54.80150.
69.05200.
95.20273.15
105.3 ± 2.0298.15
106.11300.
148.64400.
188.68500.
223.38600.
252.62700.
277.05800.
297.42900.
314.421000.
328.661100.
340.651200.
350.791300.
359.441400.
366.851500.

Constant pressure heat capacity of gas

Cp,gas (J/mol*K) Temperature (K) Reference Comment
138.07370.Spitzer R., 1946Please also see Montgomery J.B., 1942.; GT
143.1 ± 1.3384.
146.44390.
153.97410.
161.8 ± 1.7428.
174.5 ± 1.7460.
189.5 ± 2.1495.
196.7 ± 2.1521.
206.3 ± 2.1544.

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.

Spitzer and Huffman, 1947
Spitzer, R.; Huffman, H.M., The heats of combustion of cyclopentane, cyclohexane, cycloheptane and cyclooctane, J. Am. Chem. Soc., 1947, 69, 211-213. [all data]

Prosen, Johnson, et al., 1946
Prosen, E.J.; Johnson, W.H.; Rossini, F.D., Heats of formation and combustion of the normal alkylcyclopentanes and cyclohexanes and the increment per CH2 group for several homologous series of hydrocarbons, J. Res. NBS, 1946, 37, 51-56. [all data]

Moore, Renquist, et al., 1940
Moore, G.E.; Renquist, M.L.; Parks, G.S., Thermal data on organic compounds. XX. Modern combustion data for two methylnonanes, methyl ethyl ketone, thiophene and six cycloparaffins, J. Am. Chem. Soc., 1940, 62, 1505-1507. [all data]

Beckett C.W., 1947
Beckett C.W., The thermodynamic properties and molecular structure of cyclohexane, methylcyclohexane, ethylcyclohexane, and seven dimethylcyclohexanes, J. Am. Chem. Soc., 1947, 69, 2488-2495. [all data]

Dorofeeva O.V., 1986
Dorofeeva O.V., Thermodynamic properties of twenty-one monocyclic hydrocarbons, J. Phys. Chem. Ref. Data, 1986, 15, 437-464. [all data]

Brickwedde F.G., 1946
Brickwedde F.G., Equilibrium constants of some reactions involved in the production of 1,3-butadiene, J. Res. Nat. Bur. Stand., 1946, 37, 263-279. [all data]

Kilpatrick J.E., 1947
Kilpatrick J.E., Heats, equilibrium constants, and free energies of formation of the alkylcyclopentanes and alkylcyclohexanes, J. Res. Nat. Bur. Stand., 1947, 39, 523-543. [all data]

Lippincott E.R., 1966
Lippincott E.R., Enthalpy, free energy, entropy, and heat capacity of cyclohexane and acetaldehyde, Bull. Soc. Chim. Belges., 1966, 75, 655-667. [all data]

Spitzer R., 1946
Spitzer R., The heat capacity of gaseous cyclopentane, cyclohexane and methylcyclohexane, J. Am. Chem. Soc., 1946, 68, 2537-2538. [all data]

Montgomery J.B., 1942
Montgomery J.B., The heat capacity of organic vapors. IV. Benzene, fluorobenzene, toluene, cyclohexane, methylcyclohexane and cyclohexene, J. Am. Chem. Soc., 1942, 64, 2375-2377. [all data]


Notes

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