Heptanal

• Formula: C₇H₁₄O
• Molecular weight: 114.1855
• IUPAC Standard InChI: InChI=1S/C7H14O/c1-2-3-4-5-6-7-8/h7H,2-6H2,1H3 Copy

  
• IUPAC Standard InChIKey: FXHGMKSSBGDXIY-UHFFFAOYSA-N Copy
• CAS Registry Number: 111-71-7
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
  The 3d structure may be viewed using Java or Javascript.
• Other names: n-Heptaldehyde; n-Heptanal; n-Heptylaldehyde; Enanthal; Enanthaldehyde; Enanthic aldehyde; Enanthole; Heptaldehyde; Heptanaldehyde; Heptyl aldehyde; Oenanthal; Oenanthaldehyde; Oenanthic aldehyde; Oenanthol; n-C6H13CHO; 1-Heptanal; 1-Heptaldehyde; Heptan-1-al; NSC 2190
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• Information on this page:
  • Condensed phase thermochemistry data
  • Phase change data
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Henry's Law data
  • Gas phase ion energetics data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • Gas Chromatography
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
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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

Constant pressure heat capacity of liquid

Phase change 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:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
DH - Eugene S. Domalski and Elizabeth D. Hearing
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.

Reduced pressure boiling point

Enthalpy of vaporization

Antoine Equation Parameters

log₁₀(P) = A − (B / (T + C))
    P = vapor pressure (atm)
    T = temperature (K)

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Enthalpy of fusion

Entropy of fusion

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]

Vasil'ev and Petrov, 1984
Vasil'ev, I.A.; Petrov, V.M., Thermodynamic Properties of Oxygen-containing Organic Compounds, Handbook, Soedinenii: Khimya, Leningrad, p 240, 1984. [all data]

Parks, Kennedy, et al., 1956, 2
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, J. Am. Chem. Soc., 1956, 78, 56-9. [all data]

Gude and Teja, 1994
Gude, M.T.; Teja, A.S., The Critical Properties of Several n-Alkanals, Tetralin and NMP, Experimental Results for DIPPR 1990-91 Projects on Phase Equilibria and Pure Component Properties, 1994, 1994, DIPPR Data Series No. 2, p.174-83. [all data]

Chickos, Hosseini, et al., 1995
Chickos, James S.; Hosseini, Sarah; Hesse, Donald G., Determination of vaporization enthalpies of simple organic molecules by correlations of changes in gas chromatographic net retention times, Thermochimica Acta, 1995, 249, 41-62, https://doi.org/10.1016/0040-6031(95)90670-3 . [all data]

D'yakova, Korichev, et al., 1981
D'yakova, G.N.; Korichev, G.L.; Korkhova, A.D.; Vasil'eva, T.F.; Vasil'ev, I.A., Zh. Prikl. Khim. (Leningrad), 1981, 54, 1644. [all data]

Turvey, Evans, et al., 1960
Turvey, J.R.; Evans, J.M.; Bhavanandan, V.P.; Wannigama, G.P.; Biddle, P.; Lane, E.S.; Willans, J.L.; Swinbourne, E.S.; Giral, F.; Hahn, L. Rodriguez; Hargreaves, G.B.; Peacock, R.D.; Schoental, R.; Cambie, R.C.; Nicholson, G.R., Notes, J. Chem. Soc., 1960, 2366, https://doi.org/10.1039/jr9600002366 . [all data]

Verevkin, Krasnykh, et al., 2003
Verevkin, Sergey P.; Krasnykh, Eugen L.; Vasiltsova, Tatiana V.; Koutek, Bohumir; Doubsky, Jan; Heintz, Andreas, Vapor pressures and enthalpies of vaporization of a series of the linear aliphatic aldehydes, Fluid Phase Equilibria, 2003, 206, 1-2, 331-339, https://doi.org/10.1016/S0378-3812(03)00035-9 . [all data]

Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]

Stull, 1947
Stull, Daniel R., Vapor Pressure of Pure Substances. Organic and Inorganic Compounds, Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022 . [all data]

D'yakova and Vasil'ev, 1980
D'yakova, G.N.; Vasil'ev, I.A., Study of the thermodynamic properties of octanal and decanal, B.S.R. Inst. Neftekhim. Protsessov (Leningrad), 1980, (1), 51. [all data]

Notes

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• Symbols used in this document:
  

  Cp,liquid	Constant pressure heat capacity of liquid
  Pc	Critical pressure
  S°liquid	Entropy of liquid at standard conditions
  Tboil	Boiling point
  Tc	Critical temperature
  Tfus	Fusion (melting) point
  Ttriple	Triple point temperature
  ΔcH°liquid	Enthalpy of combustion of liquid at standard conditions
  ΔfH°liquid	Enthalpy of formation of liquid at standard conditions
  ΔfusH	Enthalpy of fusion
  ΔfusS	Entropy of fusion
  ΔvapH	Enthalpy of vaporization
  ΔvapH°	Enthalpy of vaporization at standard conditions
  ρc	Critical density

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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