Cyclopentane, butyl-

• Formula: C₉H₁₈
• Molecular weight: 126.2392
• IUPAC Standard InChI: InChI=1S/C9H18/c1-2-3-6-9-7-4-5-8-9/h9H,2-8H2,1H3 Copy

  
• IUPAC Standard InChIKey: ZAGHKONXGGSVDV-UHFFFAOYSA-N Copy
• CAS Registry Number: 2040-95-1
• 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: Butylcyclopentane; n-Butylcyclopentane
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• Information on this page:
  • Phase change data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Condensed phase thermochemistry data
  • Gas phase ion energetics data
  • Gas Chromatography
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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
DRB - Donald R. Burgess, Jr.
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing

Enthalpy of vaporization

Enthalpy of vaporization

Δ_vapH = A exp(-βT_r) (1 − T_r)^β
    Δ_vapH = Enthalpy of vaporization (at saturation pressure) (kJ/mol)
    T_r = reduced temperature (T / T_c)

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Enthalpy of fusion

Entropy of fusion

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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Gas Phase Spectrum

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Additional Data

Mass spectrum (electron ionization)

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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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Additional Data

References

Go To: Top, Phase change data, IR Spectrum, Mass spectrum (electron ionization), Notes

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

Messerly, Todd, et al., 1965
Messerly, J.F.; Todd, S.S.; Finke, H.L., Low-Temperature Thermodynamic Properties of n-Propyl, n-Butyl and n-Decyl-Substituted Cyclopentanes, J. Phys. Chem., 1965, 69, 353-9. [all data]

Anonymous, 1959
Anonymous, X., Unpublished, 1959, Bartlesville, OK 1959. [all data]

Majer and Svoboda, 1985
Majer, V.; Svoboda, V., Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation, Blackwell Scientific Publications, Oxford, 1985, 300. [all data]

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]

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]

Svoboda, Charvátová, et al., 1981
Svoboda, Václav; Charvátová, Vladimíra; Majer, Vladimír; Pick, Jirí, Determination of heats of vaporization and some other thermodynamic quantities for four alkylcycloparaffins, Collect. Czech. Chem. Commun., 1981, 46, 12, 2983-2988, https://doi.org/10.1135/cccc19812983 . [all data]

Messerly, Todd, et al., 1965, 2
Messerly, J.F.; Todd, S.S.; Finke, H.L., Low-temperature thermodynamic properties of n-propyl-, n-butyl-, and n-decyl-substituted cyclopentanes, J. Phys. Chem., 1965, 69, 353-359. [all data]

Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D., Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III, J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985 . [all data]

Notes

Go To: Top, Phase change data, IR Spectrum, Mass spectrum (electron ionization), References

• Symbols used in this document:
  

  Tboil	Boiling point
  Tc	Critical temperature
  Tfus	Fusion (melting) point
  Ttriple	Triple point temperature
  ΔfusH	Enthalpy of fusion
  ΔfusS	Entropy of fusion
  ΔvapH	Enthalpy of vaporization
  ΔvapH°	Enthalpy of vaporization at standard conditions

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