Acetoin

• Formula: C₄H₈O₂
• Molecular weight: 88.1051
• IUPAC Standard InChI: InChI=1S/C4H8O2/c1-3(5)4(2)6/h3,5H,1-2H3 Copy

  
• IUPAC Standard InChIKey: ROWKJAVDOGWPAT-UHFFFAOYSA-N Copy
• CAS Registry Number: 513-86-0
• 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.
• Species with the same structure:
  • Acetoin
• Stereoisomers:
  • 2-Butanone, 3-hydroxy-, (R)-
• Other names: 2-Butanone, 3-hydroxy-; γ-Hydroxy-β-oxobutane; Acetyl methyl carbinol; Dimethylketol; Methanol, acetylmethyl-; 1-Hydroxyethyl methyl ketone; 2-Hydroxy-3-butanone; 2,3-Butanolone; 3-Hydroxy-2-butanone; 2-Butanol-3-one; UN 2621; 2-Hydroxy-3-oxobutane; 3-Hydroxybutan-2-one; 3-Hydroxyl-2-butanone; Butan-2-one, 3-hydroxy-; NSC 7609; acetoine; 3-hydroxy-2-butanone (acetoin); 3-hydroxybutan-2-one (acetoin); 3-hydroxy-2-butanone (acetoine); acetoin (3-hydroxy-2-butanone
• Information on this page:
  • Phase change data
  • Gas phase ion energetics data
  • References
  • Notes
• Other data available:
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • Gas Chromatography
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
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Phase change data

Go To: Top, Gas phase ion energetics data, References, Notes

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

Go To: Top, Phase change data, References, Notes

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

Data compiled by: Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard

View reactions leading to C₄H₈O₂⁺ (ion structure unspecified)

Appearance energy determinations

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.

Temprado and Chickos, 2005
Temprado, Manuel; Chickos, James S., Application of correlation-gas chromatography to evaluate the vaporization enthalpy of a component in an equilibrium mixture, Thermochimica Acta, 2005, 435, 1, 49-56, https://doi.org/10.1016/j.tca.2005.03.021 . [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]

Holmes and Lossing, 1984
Holmes, J.L.; Lossing, F.P., Heats of formation of organic radicals from appearance energies, Int. J. Mass Spectrom. Ion Processes, 1984, 58, 113. [all data]

Notes

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

• Symbols used in this document:
  

  AE	Appearance energy
  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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