Heptanal

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Condensed 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
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Δfliquid-312. ± 4.kJ/molCcbNicholson, 1960Heat of formation derived by Cox and Pilcher, 1970; ALS
Quantity Value Units Method Reference Comment
Δcliquid-4444. ± 4.kJ/molCcbNicholson, 1960Heat of formation derived by Cox and Pilcher, 1970; Corresponding Δfliquid = -312. kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Quantity Value Units Method Reference Comment
liquid335.4J/mol*KN/AD'yakova and Vasil'ev, 1982DH
liquid348.5J/mol*KN/AParks, Kennedy, et al., 1956Extrapolation below 80 K, 56.69 J/mol*K.; DH

Constant pressure heat capacity of liquid

Cp,liquid (J/mol*K) Temperature (K) Reference Comment
230.78298.15D'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
250.33298.15Parks, Kennedy, et al., 1956T = 80 to 300 K.; DH
204.6298.von Reis, 1881T = 298 to 450 K.; DH

References

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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]

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

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