2-Pentanone, 4-hydroxy-4-methyl-

• Formula: C₆H₁₂O₂
• Molecular weight: 116.1583
• IUPAC Standard InChI: InChI=1S/C6H12O2/c1-5(7)4-6(2,3)8/h8H,4H2,1-3H3 Copy

  
• IUPAC Standard InChIKey: SWXVUIWOUIDPGS-UHFFFAOYSA-N Copy
• CAS Registry Number: 123-42-2
• 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: Acetonyldimethylcarbinol; Diacetone alcohol; Diketone alcohol; Tyranton; 4-Hydroxy-4-methylpentan-2-one; (CH3)2C(OH)CH2C(O)CH3; 4-Hydroxy-4-methyl-2-pentanone; 2-Methyl-2-pentanol-4-one; 4-Methyl-2-pentanon-4-ol; Pyranton A; Diacetonalcohol; Diacetonalcool; Diacetonalkohol; Diacetone-alcool; 4-Hydroxy-2-keto-4-methylpentane; 4-Hydroxy-4-methyl-pentan-2-on; 4-Idrossi-4-metil-pentan-2-one; Diacetone; 4-Hydroxy-4-methylpentanone-2; Pyranton; UN 1148; 2-Hydroxy-2-methyl-4-pentanone; 4-Methyl-4-hydroxy-2-pentanone; Pyraton; NSC 9005; 4-hydroxy-4-methyl-pentanone; 4-Methyl-4-hydroxypentan-2-one
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• Information on this page:
  • Gas phase thermochemistry data
  • Condensed phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • References
  • Notes
• Other data available:
  • Gas Chromatography
• 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 as indicated in comments:
ALS - 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 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
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
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

2 =

By formula: 2C₃H₆O = C₆H₁₂O₂

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

Data compiled as indicated in comments:
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Appearance energy determinations

IR Spectrum

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Data compiled by: Coblentz Society, Inc.

• Not specified, most likely a prism, grating, or hybrid spectrometer.; (NO SPECTRUM, ONLY SCANNED IMAGE IS AVAILABLE)

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

• gas

Mass spectrum (electron ionization)

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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

Spectrum

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Additional Data

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), Notes

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

Stewart, 2004
Stewart, J.J.P., Comparison of the accuracy of semiempirical and some DFT methods for predicting heats of formation, J. Mol. Model, 2004, 10, 1, 6-10, https://doi.org/10.1007/s00894-003-0157-6 . [all data]

Vilcu, Perisanu, et al., 1975
Vilcu, R.; Perisanu, S.; Ciocazanu, I., Heats of formation in the ideal gas state of some substances containing carbon, hydrogen and oxygen, Conf. Int. Thermodyn. Chim. C.R. 4th, 1975, 1, 105-112. [all data]

Vilcu and Perisanu, 1979
Vilcu, R.; Perisanu, S., The standard enthalpies of formation of some C, H, O containing compounds, Rev. Roum. Chim., 1979, 24, 237-243. [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]

Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]

Anonymous, 1958
Anonymous, X., Am. Pet. Inst. Res. Proj. 50, 1958, Unpublished, 1958. [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]

Fuge, Bowden, et al., 1952
Fuge, E.T.J.; Bowden, S.T.; Jones, W.J., Some Physical Properties of Diacetone Alcohol, Mesityl Oxide and Methyl Isobutyl Ketone, J. Phys. Chem., 1952, 56, 8, 1013-1016, https://doi.org/10.1021/j150500a022 . [all data]

Stull, 1947
Stull, Daniel R., Vapor Pressure of Pure Substances. Organic and Inorganic Compounds, Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022 . [all data]

Davis and Burrows, 1936
Davis, G.L.; Burrows, G.H., Equilibrium and free energy relationships in the system acetone-diacetone alcohol, J. Am. Chem. Soc., 1936, 58, 311-312. [all data]

Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018 . [all data]

Shigorin, Filyugina, et al., 1967
Shigorin, D.N.; Filyugina, A.D.; Potapov, V.K., Role of intramolecular hydrogen bonding in the ionisation and dissociation of compounds, Zh. Fiz. Khim., 1967, 41, 2336, In original 1255. [all data]

Notes

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• Symbols used in this document:
  

  AE	Appearance energy
  Tboil	Boiling point
  Tfus	Fusion (melting) point
  ΔcH°liquid	Enthalpy of combustion of liquid at standard conditions
  ΔfH°gas	Enthalpy of formation of gas at standard conditions
  ΔfH°liquid	Enthalpy of formation of liquid at standard conditions
  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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