Heptanoic acid, 2-ethyl-

• Formula: C₉H₁₈O₂
• Molecular weight: 158.2380
• IUPAC Standard InChI: InChI=1S/C9H18O2/c1-3-5-6-7-8(4-2)9(10)11/h8H,3-7H2,1-2H3,(H,10,11) Copy

  
• IUPAC Standard InChIKey: DYWSVUBJGFTOQC-UHFFFAOYSA-N Copy
• CAS Registry Number: 3274-29-1
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
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• Other names: 2-Ethylheptanoic acid; 3-Octanecarboxylic acid
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• Information on this page:
  • Phase change data
  • Gas phase ion energetics data
  • References
  • Notes
• Other data available:
  • Reaction thermochemistry data
  • IR Spectrum
  • Mass spectrum (electron ionization)
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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 by: William E. Acree, Jr., James S. Chickos

Enthalpy of vaporization

Gas phase ion energetics 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: John E. Bartmess

De-protonation reactions

C₈H₁₇O₂^- +  =

By formula: C₈H₁₇O₂^- + H⁺ = C₉H₁₈O₂

References

Go To: Top, Phase change data, Gas phase ion energetics data, Notes

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

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]

Trent, Miller, et al., 1960
Trent, F.M.; Miller, F.D.; Brown, G.H., Some Physical Properties of Certain C ₉ and C ₁₀ Aliphatic Acids and their Methyl Esters.2-Ethylheptanoic and Pelargonic Acids, and Methyl Esters of 2-Ethylpentanoic,Pelargonic, 2, 5-Diethyladipic, 2-Ethylsuberic, and Sebacic Acids., J. Chem. Eng. Data, 1960, 5, 1, 110-111, https://doi.org/10.1021/je60005a026 . [all data]

Norrman and McMahon, 1999
Norrman, K.; McMahon, T.B., Intramolecular solvation of carboxylate anions in the gas phase, J. Phys. Chem. A, 1999, 103, 35, 7008-7016, https://doi.org/10.1021/jp9908202 . [all data]

Notes

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• Symbols used in this document:
  

  ΔrG°	Free energy of reaction 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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