Phenol, 2-(1,1-dimethylethyl)-4-methyl- (2024)

  • Formula: C11H16O
  • Molecular weight: 164.2441
  • IUPAC Standard InChI:InChI=1S/C11H16O/c1-8-5-6-10(12)9(7-8)11(2,3)4/h5-7,12H,1-4H3

    Phenol, 2-(1,1-dimethylethyl)-4-methyl- (1)

  • IUPAC Standard InChIKey:IKEHOXWJQXIQAG-UHFFFAOYSA-N
  • CAS Registry Number: 2409-55-4
  • Chemical structure: Phenol, 2-(1,1-dimethylethyl)-4-methyl- (2)
    This structure is also available as a 2d Mol fileor as a computed3d SD file
    The 3d structure may be viewed usingJavaorJavascript.
  • Other names:p-Cresol, 2-tert-butyl-;o-tert-Butyl-p-cresol;2-tert-Butyl-p-Cresol;2-tert-Butyl-4-Methylphenol;4-Methyl-2-tert-butylphenol;1-Hydroxy-2-tert-butyl-4-methylbenzene;2-tert-Butyl-4-methyl-1-phenol;2-Terc.butyl-p-kresol;2-t-Butyl-p-cresol;2-t-Butyl-4-methylphenol;2-(1,1-Dimethylethyl)-4-methyl-phenol;2-tert-Butyl-4-cresol;4-Methyl-2-(1,1-dimethylethyl)phenol;4-Methyl-6-t-butylphenol;NSC 60301;2-(1,1'-dimethylethyl)-4-methylphenol
  • Permanent link for this species. Use this link for bookmarking this speciesfor future reference.
  • Information on this page:
    • Gas phase thermochemistry data
    • Phase change data
    • Reaction thermochemistry data
    • References
    • Notes
  • Other data available:
    • IR Spectrum
    • Mass spectrum (electron ionization)
    • Gas Chromatography
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Gas phase thermochemistry data

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Data compilation copyrightby 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

QuantityValueUnitsMethodReferenceComment
Δfgas-218.kJ/molSemiStewart, 2004
Δfgas-207.0 ± 3.2kJ/molEqkVerevkin, Nesterova, et al., 1984ALS

Phase change data

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Data compilation copyrightby 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
AC - William E. Acree, Jr., James S. Chickos

QuantityValueUnitsMethodReferenceComment
Tboil510.2KN/AWeast and Grasselli, 1989BS
QuantityValueUnitsMethodReferenceComment
Tfus325.16KN/AWitschonke, 1954Uncertainty assigned by TRC = 0.3 K; TRC
Tfus325.45KN/AWitschonke, 1954Uncertainty assigned by TRC = 0.2 K; TRC
QuantityValueUnitsMethodReferenceComment
Δvap65.7 ± 0.3kJ/molGSVerevkin, 1999Based on data from 327. - 358. K.; AC
QuantityValueUnitsMethodReferenceComment
Δsub82.9 ± 0.5kJ/molGSVerevkin, 1999Based on data from 288. - 318. K.; AC

Enthalpy of vaporization

ΔvapH (kJ/mol)Temperature (K)MethodReferenceComment
63.0 ± 0.3343.GSVerevkin, 1999Based on data from 327. - 358. K.; AC
58.9400.AStephenson and Malanowski, 1987Based on data from 385. - 517. K.; AC
57.7348.N/AStage, Müller, et al., 1953Based on data from 343. - 507. K.; AC
55.7373.N/AStage, Müller, et al., 1953Based on data from 343. - 507. K.; AC
52.6423.N/AStage, Müller, et al., 1953Based on data from 343. - 507. K.; AC
48.5473.N/AStage, Müller, et al., 1953Based on data from 343. - 507. K.; AC

Antoine Equation Parameters

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

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Temperature (K)ABCReferenceComment
343. - 505.85.543892635.051-30.066Stull, 1947Coefficents calculated by NIST from author's data.

Enthalpy of sublimation

ΔsubH (kJ/mol)Temperature (K)MethodReferenceComment
82.6 ± 0.5303.GSVerevkin, 1999Based on data from 288. - 318. K.; AC
77.4284.AStephenson and Malanowski, 1987Based on data from 274. - 294. K. See also Aihara, 1960.; AC

In addition to the Thermodynamics Research Center(TRC) data available from this site, much more physicaland chemical property data is available from thefollowing TRC products:

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Reaction thermochemistry data

Go To: Top, Gas phase thermochemistry data, Phase change data, References, Notes

Data compilation copyrightby 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 thereaction search for this species. This page allows searchingof all reactions involving this species. A general reaction searchform is also available. Future versions of this site may rely onreaction search pages in place of the enumerated reactiondisplays seen below.

Individual Reactions

+ = 2Phenol, 2-(1,1-dimethylethyl)-4-methyl- (5)

By formula: C7H8O+C15H24O = 2C11H16O

QuantityValueUnitsMethodReferenceComment
Δr-9.7 ± 1.8kJ/molEqkNesterova, Verevkin, et al., 1985liquid phase

+ = Phenol, 2-(1,1-dimethylethyl)-4-methyl- (8)

By formula: C7H8O+C4H8 = C11H16O

QuantityValueUnitsMethodReferenceComment
Δr62.7 ± 2.8kJ/molEqkVerevkin, Nesterova, et al., 1984gas phase

References

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Notes

Data compilation copyrightby 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]

Verevkin, Nesterova, et al., 1984
Verevkin, S.P.; Nesterova, T.N.; Rozhnov, A.M.,The equilibrium in the dealkylation of o-t-butyl-p-cresol,Russ. J. Phys. Chem. (Engl. Transl.), 1984, 58, 284. [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]

Witschonke, 1954
Witschonke, C.R.,Freezing point and purity data for some organic compounds,Anal. Chem., 1954, 26, 562-4. [all data]

Verevkin, 1999
Verevkin, S.P.,Thermochemistry of phenols: quantification of theortho-,para-, andmeta-interactions in tert-alkyl substituted phenols,The Journal of Chemical Thermodynamics, 1999, 31, 5, 559-585, https://doi.org/10.1006/jcht.1998.0459. [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]

Stage, Müller, et al., 1953
Stage, H.; Müller, E.; Faldix, P.,Erdol u Kohle, 1953, 6, 375. [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]

Aihara, 1960
Aihara, Ariyuki,Estimation of the Energy of Hydrogen Bonds Formed in Crystals. II. Phenols,Bull. Chem. Soc. Jpn., 1960, 33, 2, 194-200, https://doi.org/10.1246/bcsj.33.194. [all data]

Nesterova, Verevkin, et al., 1985
Nesterova, T.N.; Verevkin, S.P.; Malova, T.N.; Pilshchikov, V.A.,Study of an equilibrium of tert-alkylphenols (thermodynamic analysis of the alkylation of phenols by branched olefins),Zh. Prikl. Khim. (Leningrad), 1985, 58, 827-833. [all data]

Notes

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, References

  • Symbols used in this document:
    TboilBoiling point
    TfusFusion (melting) point
    ΔfgasEnthalpy of formation of gas at standard conditions
    ΔrEnthalpy of reaction at standard conditions
    ΔsubHEnthalpy of sublimation
    ΔsubEnthalpy of sublimation at standard conditions
    ΔvapHEnthalpy of vaporization
    ΔvapEnthalpy of vaporization at standard conditions
  • Data from NIST Standard Reference Database 69:NIST Chemistry WebBook
  • The National Institute of Standards and Technology (NIST)uses its best efforts to deliver a high quality copy of theDatabase and to verify that the data contained therein havebeen selected on the basis of sound scientific judgment.However, NIST makes no warranties to that effect, and NISTshall not be liable for any damage that may result fromerrors or omissions in the Database.
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Phenol, 2-(1,1-dimethylethyl)-4-methyl- (2024)

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