3-Penten-2-one, 4-methyl-

• Formula: C₆H₁₀O
• Molecular weight: 98.1430
• IUPAC Standard InChI: InChI=1S/C6H10O/c1-5(2)4-6(3)7/h4H,1-3H3 Copy

  
• IUPAC Standard InChIKey: SHOJXDKTYKFBRD-UHFFFAOYSA-N Copy
• CAS Registry Number: 141-79-7
• 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: Acetone, isopropylidene-; Isobutenyl methyl ketone; Isopropylideneacetone; Mesityl oxide; Methyl isobutenyl ketone; Methyl 2-methyl-1-propenyl ketone; 4-Methyl-3-penten-2-one; (CH3)2C=CHC(=O)CH3; Methyl 2,2-dimethylvinyl ketone; 4-Methyl-3-pentene-2-one; 2-Methylpent-2-en-4-one; 2-Methyl-2-penten-4-one; Mesityloxid; Mesityloxyde; MIBK; Ossido di mesitile; Oxyde de mesityle; 3-Isohexen-2-one; 4-Methyl-3-penten-2-on; 4-Methylpent-3-en-2-one; 4-Metil-3-penten-2-one; 2-Methyl-2-pentenone-4; UN 1229; 2-Methyl-4-oxo-2-pentene; 2,2-Dimethylvinyl methyl ketone; NSC 38717; 4-methyl-3-penten-2-one (mesityl oxide)
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• Information on this page:
  • Gas phase thermochemistry data
  • Gas phase ion energetics data
  • Gas Chromatography
  • References
  • Notes
• Other data available:
  • Condensed phase thermochemistry data
  • Phase change data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • UV/Visible spectrum
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
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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

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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias

Data compiled as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard

View reactions leading to C₆H₁₀O⁺ (ion structure unspecified)

Ionization energy determinations

Appearance energy determinations

Gas Chromatography

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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

Kovats' RI, non-polar column, isothermal

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Kovats' RI, non-polar column, temperature ramp

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Kovats' RI, polar column, temperature ramp

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Van Den Dool and Kratz RI, non-polar column, temperature ramp

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Van Den Dool and Kratz RI, polar column, temperature ramp

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Van Den Dool and Kratz RI, polar column, custom temperature program

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Normal alkane RI, non-polar column, isothermal

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Normal alkane RI, non-polar column, temperature ramp

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Normal alkane RI, non-polar column, custom temperature program

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Normal alkane RI, polar column, temperature ramp

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Normal alkane RI, polar column, custom temperature program

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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.

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Zenkevich and Kulikova, 1993
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Zhu, M.; Li, E.; He, H., Determination of volatile chemical constitutes in tea by simultaneous distillation extraction, vacuum hydrodistillation and thermal desrption, Chromatographia, 2008, 68, 7/8, 603-610, https://doi.org/10.1365/s10337-008-0732-1 . [all data]

Ádámová, Orinák, et al., 2005
Ádámová, M.; Orinák, A.; Halás, L., Retention indices as identification tool in pyrolysis-capillary gas chromatography, J. Chromatogr. A, 2005, 1087, 1-2, 131-141, https://doi.org/10.1016/j.chroma.2005.01.003 . [all data]

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Notes

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• Symbols used in this document:
  

  AE	Appearance energy
  IE (evaluated)	Recommended ionization energy
  ΔfH°gas	Enthalpy of formation of gas at standard conditions

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