2-Butanol

• Formula: C₄H₁₀O
• Molecular weight: 74.1216
• IUPAC Standard InChI: InChI=1S/C4H10O/c1-3-4(2)5/h4-5H,3H2,1-2H3 Copy

  
• IUPAC Standard InChIKey: BTANRVKWQNVYAZ-UHFFFAOYSA-N Copy
• CAS Registry Number: 78-92-2
• 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.
• Species with the same structure:
  • 2-Butanol
• Stereoisomers:
  • 2-Butanol, (R)-
  • (S)-butan-2-ol
• Other names: sec-Butyl Alcohol; sec-Butanol; CCS 301; Ethyl methyl carbinol; Methyl ethyl carbinol; 1-Methyl-1-propanol; 1-Methylpropyl alcohol; 2-Hydroxybutane; sec-C4H9OH; Butane, 2-hydroxy-; Butanol-2; Butan-2-ol; 2-Butyl alcohol; s-Butyl alcohol; Butylene hydrate; DL-sec-Butanol; DL-2-Butanol; Alcool butylique secondaire; Butanol secondaire; s-Butanol; 1-Methyl propanol; n-Butan-2-ol; NSC 25499
• 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)
  • Gas Chromatography
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
• Options:
  • Switch to SI units

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• NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data)

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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:
DRB - Donald R. Burgess, Jr.
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

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, Henry's Law 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 as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
BS - Robert L. Brown and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing

Enthalpy of vaporization

Enthalpy of vaporization

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

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Antoine Equation Parameters

log₁₀(P) = A − (B / (T + C))
    P = vapor pressure (atm)
    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:
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^- +  =

By formula: C₄H₉O^- + H⁺ = C₄H₁₀O

 +  =

By formula: H₂ + C₄H₈O = C₄H₁₀O

=  + 

By formula: C₄H₁₀O = H₂ + C₄H₈O

 +  =

By formula: C₄H₈ + C₄H₁₀O = C₈H₁₈O

 +  =

By formula: C₂H₂O + C₄H₁₀O = C₆H₁₂O₂

 +  = ( • )

By formula: Na⁺ + C₄H₁₀O = (Na⁺ • C₄H₁₀O)

 +  = ( • )

By formula: Li⁺ + C₄H₁₀O = (Li⁺ • C₄H₁₀O)

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.

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Andon, R.J.L.; Connett, J.E.; Counsell, J.F.; Lees, E.B.; Martin, J.F., Thermodynamic properties of organic oxygen compounds: xxvii racemate of - butan-2-ol and (+)-butan-2-ol, J. Chem. Soc. A, 1971, 1971, 661-4. [all data]

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Gude, M.; Teja, A.S., Vapor-Liquid Critical Properties of Elements and Compounds. 4. Aliphatic Alkanols, J. Chem. Eng. Data, 1995, 40, 1025-1036. [all data]

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Teja, A.S.; Lee, R.J.; Rosenthal, D.J.; Anselme, M.J., Correlation of the Critical Properties of Alkanes and Alkanols in 5th IUPAC Conference on Alkanes and AlkanolsGradisca, 1989. [all data]

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Gierycz, Kosowski, et al., 2009
Gierycz, Pawel; Kosowski, Andrzej; Swietlik, Ryszard, Vapor-Liquid Equilibria in Binary Systems Formed by Cyclohexane with Alcohols, J. Chem. Eng. Data, 2009, 54, 11, 2996-3001, https://doi.org/10.1021/je900050z . [all data]

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Dejoz, Ana; Cruz Burguet, M.; Munoz, Rosa; Sanchotello, Margarita, Isobaric Vapor-Liquid Equilibria of Tetrachloroethylene with 1-Butanol and 2-Butanol at 6 and 20 kPa, J. Chem. Eng. Data, 1995, 40, 1, 290-292, https://doi.org/10.1021/je00017a064 . [all data]

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Ambrose, D.; Counsell, J.F.; Davenport, A.J., The use of Chebyshev polynomials for the representation of vapour pressures between the triple point and the critical point, The Journal of Chemical Thermodynamics, 1970, 2, 2, 283-294, https://doi.org/10.1016/0021-9614(70)90093-5 . [all data]

Sachek, Peshchenko, et al., 1982
Sachek, A.I.; Peshchenko, A.D.; Markovnik, V.S.; Ral'ko, O.V.; Andreevskii, D.N.; Leont'eva, A.A., Termodin. Org. Soedin., 1982, 94. [all data]

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Di Cave, Sergio; Chianese, Angelo; Prantera, Antonio, Vapor-liquid equilibrium of the system methylethylketone-sec-butyl alcohol, J. Chem. Eng. Data, 1978, 23, 4, 279-281, https://doi.org/10.1021/je60079a013 . [all data]

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Brown, I.; Fock, W.; Smith, F., The thermodynamic properties of solutions of normal and branched alcohols in benzene and n-hexane, The Journal of Chemical Thermodynamics, 1969, 1, 3, 273-291, https://doi.org/10.1016/0021-9614(69)90047-0 . [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°gas	Entropy of gas at standard conditions
  S°liquid	Entropy of liquid at standard conditions
  Tboil	Boiling point
  Tc	Critical temperature
  Ttriple	Triple point temperature
  Vc	Critical volume
  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
  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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