2-Butanone

• Formula: C₄H₈O
• Molecular weight: 72.1057
• IUPAC Standard InChI: InChI=1S/C4H8O/c1-3-4(2)5/h3H2,1-2H3 Copy

  
• IUPAC Standard InChIKey: ZWEHNKRNPOVVGH-UHFFFAOYSA-N Copy
• CAS Registry Number: 78-93-3
• 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: Butan-2-one; Butanone; Ethyl methyl ketone; Ketone, methyl ethyl; Methyl ethyl ketone; MEK; C2H5COCH3; Acetone, methyl-; Aethylmethylketon; 3-Butanone; Butanone 2; Ethyl methyl cetone; Ethylmethylketon; Ketone, ethyl methyl; Meetco; Methyl acetone; Metiletilchetone; Metyloetyloketon; Rcra waste number U159; UN 1193; 2-Oxobutane; 2-Butanal; 2-butanone (MEK; methyl ethyl ketone); 2-butanone (MEK)
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Gas phase thermochemistry data
  • Condensed phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data
  • Henry's Law data
  • References
  • Notes
• Other data available:
  • Gas phase ion energetics data
  • Ion clustering data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • Vibrational and/or electronic energy levels
  • 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
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Constant pressure heat capacity of gas

Constant pressure heat capacity of gas

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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
BS - Robert L. Brown and Stephen E. Stein
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing

Enthalpy of vaporization

Enthalpy of vaporization

Δ_vapH = A exp(-βT_r) (1 − T_r)^β
    Δ_vapH = Enthalpy of vaporization (at saturation pressure) (kJ/mol)
    T_r = reduced temperature (T / T_c)

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Antoine Equation Parameters

log₁₀(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

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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 as indicated in comments:
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
B - John E. Bartmess
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
RCD - Robert C. Dunbar

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

C₄H₉O⁺ +  = (C₄H₉O⁺ • )

By formula: C₄H₉O⁺ + C₄H₈O = (C₄H₉O⁺ • C₄H₈O)

Bond type: Hydrogen bonds of the type OH-O between organics

C₅H₁₁O⁺ +  = (C₅H₁₁O⁺ • )

By formula: C₅H₁₁O⁺ + C₄H₈O = (C₅H₁₁O⁺ • C₄H₈O)

Bond type: Hydrogen bonds of the type OH-O between organics

C₄H₇O^- +  =

By formula: C₄H₇O^- + H⁺ = C₄H₈O

C₃H₉Sn⁺ +  = (C₃H₉Sn⁺ • )

By formula: C₃H₉Sn⁺ + C₄H₈O = (C₃H₉Sn⁺ • C₄H₈O)

Free energy of reaction

CH₆N⁺ +  = (CH₆N⁺ • )

By formula: CH₆N⁺ + C₄H₈O = (CH₆N⁺ • C₄H₈O)

Bond type: Hydrogen bonds of the type NH+-O between organics

Free energy of reaction

 +  = ( • )

By formula: Cl^- + C₄H₈O = (Cl^- • C₄H₈O)

 +  =

By formula: H₂ + C₄H₈O = C₄H₁₀O

C₄H₇O^- +  =

By formula: C₄H₇O^- + H⁺ = C₄H₈O

 +  = ( • )

By formula: NO^- + C₄H₈O = (NO^- • C₄H₈O)

C₄H₇O^- +  =

By formula: C₄H₇O^- + H⁺ = C₄H₈O

(CAS Reg. No. 35730-33-7 • 4294967295) +  = CAS Reg. No. 35730-33-7

By formula: (CAS Reg. No. 35730-33-7 • 4294967295C₄H₈O) + C₄H₈O = CAS Reg. No. 35730-33-7

=  + 

By formula: C₄H₁₀O = H₂ + C₄H₈O

 +  = ( • )

By formula: Mg⁺ + C₄H₈O = (Mg⁺ • C₄H₈O)

 +  = 2 + 

By formula: C₆H₁₄O₂ + H₂O = 2CH₄O + C₄H₈O

 +  =  + 

By formula: HI + C₄H₇IO = I₂ + C₄H₈O

 +  =

By formula: H₂ + C₄H₆O = C₄H₈O

 +  = ( • )

By formula: Na⁺ + C₄H₈O = (Na⁺ • C₄H₈O)

Henry's Law 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: Rolf Sander

Henry's Law constant (water solution)

k_H(T) = k°_H exp(d(ln(k_H))/d(1/T) ((1/T) - 1/(298.15 K)))
k°_H = Henry's law constant for solubility in water at 298.15 K (mol/(kg*bar))
d(ln(k_H))/d(1/T) = Temperature dependence constant (K)

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, Notes

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

Chao and Zwolinski, 1976
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Sinke, G.C.; Oetting, F.L., The chemical thermodynamic properties of methyl ethyl ketone, J. Phys. Chem., 1964, 68, 1354-1358. [all data]

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Wilhoit, Chao, et al., 1985
Wilhoit, R.C.; Chao, J.; Hall, K.R., Thermodynamic Properties of Key Organic Compounds in the Carbon Range C1 to C4. Part 1. Properties of Condensed Phases, J. Phys. Chem. Ref. Data, 1985, 14, 1. [all data]

Andon, Counsell, et al., 1968, 2
Andon, R.J.L.; Counsell, J.F.; Martin, J.F., Thermodynamic properties of organic oxygen compounds. Part XX. The low- temperature heat capacity and entropy of C4 and C5 ketones., J. Chem. Soc. A, 1968, 1968, 1894-7. [all data]

Sinke and Oetting, 1964, 2
Sinke, G.C.; Oetting, F.L., The Chemical Thermodynamic Properties of Methyl Ethyl Ketone, J. Phys. Chem., 1964, 68, 1354-8. [all data]

Parks, Kennedy, et al., 1956, 2
Parks, G.S.; Kennedy, W.D.; Gates, R.R.; Mosley, J.R.; Moore, G.E.; Renquist, M.L., Thermal Data on Organic Compounds XXVI. Some Heat Capacity, Entropy and Free Energy Data for Seven Compounds Containing Oxygen, J. Am. Chem. Soc., 1956, 78, 56-9. [all data]

Kobe, Crawford, et al., 1955
Kobe, K.A.; Crawford, H.R.; Stephenson, R.W., Critical Properties and Vapor Pressures of Some Ketones, Ind. Eng. Chem., 1955, 47, 1767-72. [all data]

Rosenbaum, 1951
Rosenbaum, M., , M.S. Thesis, Univ. Tex., Austin, TX, 1951. [all data]

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Notes

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, References

• Symbols used in this document:
  

  Cp,gas	Constant pressure heat capacity of gas
  Cp,liquid	Constant pressure heat capacity of liquid
  Pc	Critical pressure
  S°liquid	Entropy of liquid at standard conditions
  T	Temperature
  Tboil	Boiling point
  Tc	Critical temperature
  Tfus	Fusion (melting) point
  Ttriple	Triple point temperature
  d(ln(kH))/d(1/T)	Temperature dependence parameter for Henry's Law constant
  k°H	Henry's Law constant at 298.15K
  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
  ΔfusH	Enthalpy of fusion
  ΔfusS	Entropy of fusion
  ΔrG°	Free energy of reaction at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions
  ΔrS°	Entropy of reaction at standard conditions
  ΔvapH	Enthalpy of vaporization
  ΔvapH°	Enthalpy of vaporization at standard conditions
  ρc	Critical density

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