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Cyclohexane, methyl-

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

Quantity Value Units Method Reference Comment
Deltafgas-154.8 ± 1.0kJ/molCcbProsen, Johnson, et al., 1946ALS
Deltafgas-159.9kJ/molN/AMoore, Renquist, et al., 1940Value computed using «DELTA»fHliquid° value of -195.3±1.9 kj/mol from Moore, Renquist, et al., 1940 and «DELTA»vapH° value of 35.4 kj/mol from Prosen, Johnson, et al., 1946.; DRB
Quantity Value Units Method Reference Comment
gas343.30J/mol*KN/ABeckett C.W., 1947GT

Constant pressure heat capacity of gas

Cp,gas (J/mol*K) Temperature (K) Reference Comment
36.5050.Thermodynamics Research Center, 1997p=1 bar. Recommended S(T) and Cp(T) values differ significantly from earlier statistically calculated values [ Beckett C.W., 1947] at high temperatures (6 and 7 J/mol*K, respectively, at 1500 K).; GT
52.01100.
70.55150.
90.31200.
123.5273.15
135.8298.15
136.7300.
186.0400.
229.9500.
266.8600.
297.6700.
323.5800.
345.4900.
364.11000.
380.11100.
393.81200.
405.61300.
415.81400.
424.51500.
441.81750.
454.22000.
463.32250.
470.12500.
475.42750.
479.53000.

Constant pressure heat capacity of gas

Cp,gas (J/mol*K) Temperature (K) Reference Comment
180.75390.Spitzer R., 1946Please also see Montgomery J.B., 1942.; GT
184.6 ± 1.7398.
189.12410.
203.4 ± 2.1439.
222.8 ± 2.1480.
241.9 ± 2.5527.

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.

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]

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]

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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