cis-1-Ethyl-3-methyl-cyclohexane

• Formula: C₉H₁₈
• Molecular weight: 126.2392
• IUPAC Standard InChI: InChI=1S/C9H18/c1-3-9-6-4-5-8(2)7-9/h8-9H,3-7H2,1-2H3/t8-,9+/m0/s1 Copy

  
• IUPAC Standard InChIKey: UDDVMPHNQKRNNS-DTWKUNHWSA-N Copy
• CAS Registry Number: 19489-10-2
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
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• Stereoisomers:
  • 1-Ethyl-3-methylcyclohexane (c,t)
  • trans-1-Ethyl-3-methylcyclohexane
• Other names: Cyclohexane, 1-ethyl-3-methyl-, cis-; 1-Ethyl-3-methylcyclohexane, (Z)-; 1-Ethyl-3-methylcyclohexane, cis; 1-Methyl,cis-3-ethylcyclohexane; c-1-Ethyl-3-methylcyclohexane; cis-1-Methyl-3-ethylcyclohexane
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• Information on this page:
  • Condensed phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data
  • References
  • Notes
• Other data available:
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • Gas Chromatography
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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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

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
AC - William E. Acree, Jr., James S. Chickos

Enthalpy of vaporization

Antoine Equation Parameters

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

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Reaction 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

=

By formula: C₉H₁₈ = C₉H₁₈

3 +  =

By formula: 3H₂ + C₉H₁₂ = C₉H₁₈

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.

Good, 1970
Good, W.D., The enthalpies of combustion and formation of n-propylcyclohexane and six methylethylcyclohexanes, J. Chem. Thermodyn., 1970, 2, 399-405. [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]

Osborn and Douslin, 1974
Osborn, Ann G.; Douslin, Donald R., Vapor-pressure relations for 15 hydrocarbons, J. Chem. Eng. Data, 1974, 19, 2, 114-117, https://doi.org/10.1021/je60061a022 . [all data]

Mann, 1968
Mann, G., Conformation and physical data of alkanes and cyclanes. IV. Conformation energy of gauche-anticonformers, Tetrahedron, 1968, 24, 6495-65. [all data]

Miki, 1975
Miki, Y., The thermodynamic properties of C₉H₁₈ naphthenes. I. The determination of the equilibrium constants of the hydrogenation of propyl- and isopropylbenzene and ethyltoluenes, Bull. Chem. Soc. Jpn., 1975, 48, 201-208. [all data]

Notes

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• Symbols used in this document:
  

  Tboil	Boiling point
  ΔcH°liquid	Enthalpy of combustion of liquid at standard conditions
  ΔfH°liquid	Enthalpy of formation of liquid at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions
  ΔvapH	Enthalpy of vaporization

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