2-Oxepanone

• Formula: C₆H₁₀O₂
• Molecular weight: 114.1424
• IUPAC Standard InChI: InChI=1S/C6H10O2/c7-6-4-2-1-3-5-8-6/h1-5H2 Copy

  
• IUPAC Standard InChIKey: PAPBSGBWRJIAAV-UHFFFAOYSA-N Copy
• CAS Registry Number: 502-44-3
• 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: ε-Caprolactone; Caprolactone; Hexamethylene oxide, 2-oxo-; Hexanoic acid, 6-hydroxy-, ε-lactone; 1,6-Hexanolide; 6-Hexanolactone; 6-Hydroxyhexanoic acid lactone; 2-Oxacycloheptanone; 6-Caprolactone; Hexanoic acid, ε-lactone; ε-Kaprolakton; Placcel M; Hexanoic acid, 6-hydroxy-, lactone; ε-Caprolactone monomer; 1-Oxa-2-oxocycloheptane; 6-Caprolactone monomer; 6-Hexanalactone; 6-Hexanolide; 6-Hydroxyhexan-6-olide; Hexan-6-olide; Epsilon-caprolactone; E-caprolactone
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• Information on this page:
  • Gas phase thermochemistry data
  • Condensed phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data
  • References
  • Notes
• Other data available:
  • IR Spectrum
  • Mass spectrum (electron ionization)
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Gas 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

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
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing

Reduced pressure boiling point

Enthalpy of vaporization

Enthalpy of fusion

Entropy of fusion

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: C₆H₁₂O₃ = C₆H₁₀O₂ + H₂O

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Notes

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

Wiberg and Waldron, 1991
Wiberg, K.B.; Waldron, R.F., Lactones. 2. Enthalpies of hydrolysis, reduction, and formation of the C₄-C₁₃ monocyclic lactones. strain energies and conformations, J. Am. Chem. Soc., 1991, 113, 7697-7705. [all data]

Lebedev and Yevstropov, 1983
Lebedev, B.V.; Yevstropov, A.A., Thermodynamics of β-propiolactone, t-butyrolactone, d-valerolactone, and e-caprolactone from 13.8 to 340 K, J. Chem. Thermodynam., 1983, 15, 115-128. [all data]

Lebedev, Yevstropov, et al., 1978
Lebedev, B.V.; Yevstropov, A.A.; Lebedev, N.K.; Karpova, Ye.A.; Lyudvig, Ye.B.; Belen'kaya, B.G., The thermodynamics of e-caprolactone, its polymer and of e-caprolactone polymerization in the 0-350°K range, Vysokomol. Soedin., 1978, A20, 1974-1980. [all data]

Lebedev and Yevstropov, 1983, 2
Lebedev, B.V.; Yevstropov, A.A. (see evstro aa), Thermodynamics of β-propiolactone, γ-butyrolactone, δ- valerolactone, and ε-caprolactone from 13.8 to 340 K, J. Chem. Thermodyn., 1983, 15, 115. [all data]

Lebedev, Evstropov, et al., 1978
Lebedev, B.V.; Evstropov, A.A.; Lebedev, N.K.; Belov, V.I., The thermodynamics of ε-caprolactone, its polymer and of η-caprolactam polymerization in the 0-350 K range, Vysikomol. Soedin., Ser. A, 1978, 20, 1974-80. [all data]

Aldrich Chemical Company Inc., 1990
Aldrich Chemical Company Inc., Catalog Handbook of Fine Chemicals, Aldrich Chemical Company, Inc., Milwaukee WI, 1990, 1. [all data]

Acree, 1991
Acree, William E., Thermodynamic properties of organic compounds: enthalpy of fusion and melting point temperature compilation, Thermochimica Acta, 1991, 189, 1, 37-56, https://doi.org/10.1016/0040-6031(91)87098-H . [all data]

Notes

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• Symbols used in this document:
  

  Cp,liquid	Constant pressure heat capacity of liquid
  S°liquid	Entropy of liquid at standard conditions
  Tboil	Boiling point
  Ttriple	Triple point temperature
  ΔfH°gas	Enthalpy of formation of gas at standard conditions
  ΔfH°liquid	Enthalpy of formation of liquid at standard conditions
  ΔfusH	Enthalpy of fusion
  ΔfusS	Entropy of fusion
  ΔrH°	Enthalpy of reaction at standard conditions
  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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