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Heptanal

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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
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Quantity Value Units Method Reference Comment
Deltafgas-63.1 ± 1.0kcal/molCcbNicholson, 1960Heat of formation derived by Cox and Pilcher, 1970; ALS
Quantity Value Units Method Reference Comment
gas110.30 ± 1.0cal/mol*KN/AChermin, 1961GT

Condensed phase thermochemistry data

Go To: Top, Gas 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:
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
Deltafliquid-74.5 ± 0.9kcal/molCcbNicholson, 1960Heat of formation derived by Cox and Pilcher, 1970; ALS
Quantity Value Units Method Reference Comment
Deltacliquid-1062.1 ± 0.9kcal/molCcbNicholson, 1960Heat of formation derived by Cox and Pilcher, 1970; Corresponding «DELTA»fliquid = -74.5 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS
Quantity Value Units Method Reference Comment
liquid80.16cal/mol*KN/AD'yakova and Vasil'ev, 1982DH
liquid83.29cal/mol*KN/AParks, Kennedy, et al., 1956Extrapolation below 80 K, 56.69 J/mol*K.; DH

Constant pressure heat capacity of liquid

Cp,liquid (cal/mol*K) Temperature (K) Reference Comment
55.158298.15D'yakova and Vasil'ev, 1982Calculated from general equation: Cp(J/mol*K) = (112.44.2) - (59.943.46)x10-2T(K) + (10.930.74)x10-4T2 + (20.660.57)xnc (number of carbon atoms) + (2.650.19)x10-2Tnc.; DH
59.830298.15Parks, Kennedy, et al., 1956T = 80 to 300 K.; DH
48.90298.von Reis, 1881T = 298 to 450 K.; DH

References

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

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

Nicholson, 1960
Nicholson, G.R., 478. The heats of combustion of butanal and heptanal, J. Chem. Soc., 1960, 2377-2378. [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]

Chermin, 1961
Chermin, H.A.G., Thermo data for petrochemicals. Part 27: Gaseous normal aldehydes. The important thermo properties are presented for all the gaseous normal aldehydes from formaldehyde through decaldehyde, Pet. Refin., 1961, 40, 181-184. [all data]

D'yakova and Vasil'ev, 1982
D'yakova, G.N.; Vasil'ev, I.A., Thermodynamic properties of aliphatic aldehydes, 1982, Termodin. [all data]

Parks, Kennedy, et al., 1956
Parks, G.S.; Kennedy, W.D.; Gates, R.R.; Mosley, J.R.; Moore, G.E.; Renquist, M.L., Thermal data on organic compounds. XXVI. Some heat capacity, entropy and free energy data for seven compounds containing oxygen., Not In System, 1956, 78, 56-59. [all data]

von Reis, 1881
von Reis, M.A., Die specifische Wärme flüssiger organischer Verbindungen und ihre Beziehung zu deren Moleculargewicht, Ann. Physik [3], 1881, 13, 447-464. [all data]


Notes

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