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-74.5 ± 0.9kcal/molCcbNicholson, 1960Heat of formation derived by Cox and Pilcher, 1970; ALS
Quantity Value Units Method Reference Comment
Δcliquid-1062.1 ± 0.9kcal/molCcbNicholson, 1960Heat of formation derived by Cox and Pilcher, 1970; Corresponding Δfliquid = -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

IR Spectrum

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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 by: Coblentz Society, Inc.

Condensed Phase Spectrum

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Notice: Except where noted, spectra from this collection were measured on dispersive instruments, often in carefully selected solvents, and hence may differ in detail from measurements on FTIR instruments or in other chemical environments. More information on the manner in which spectra in this collection were collected can be found here.

Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.

Additional Data

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Owner COPYRIGHT (C) 1988 by COBLENTZ SOCIETY INC.
Collection (C) 2018 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin DOW CHEMICAL COMPANY
Source reference COBLENTZ NO. 5731
Date 1964/04/20
State SOLUTION (10% CCl4 FOR 3800-1350, 10% CS2 FOR 1350-450 CM-1)
Instrument DOW KBr FOREPRISM-GRATING
Instrument parameters BLAZED AT 3.5, 12.0, 20.0 MICRON AND CHANGED AT 5.0, 7.5, 14.9 MICRON
Path length 0.011 CM, 0.011 CM
SPECTRAL CONTAMINATION DUE TO CS2 AROUND 850 AND CCl4 AROUND 1550 CM-1 HAVE BEEN SUBTRACTED
Resolution 2
Sampling procedure TRANSMISSION
Data processing DIGITIZED BY COBLENTZ SOCIETY (BATCH I) FROM HARD COPY

This IR spectrum is from the Coblentz Society's evaluated infrared reference spectra collection.


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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