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

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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

Quantity Value Units Method Reference Comment
Deltafgas-218.kJ/molSemiStewart, 2004 
Deltafgas-207.0 ± 3.2kJ/molEqkVerevkin, Nesterova, et al., 1984ALS

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
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tboil510.2KN/AWeast and Grasselli, 1989BS
Quantity Value Units Method Reference Comment
Tfus325.16KN/AWitschonke, 1954Uncertainty assigned by TRC = 0.3 K; TRC
Tfus325.45KN/AWitschonke, 1954Uncertainty assigned by TRC = 0.2 K; TRC
Quantity Value Units Method Reference Comment
Deltavap65.7 ± 0.3kJ/molGSVerevkin, 1999Based on data from 327. - 358. K.; AC
Quantity Value Units Method Reference Comment
Deltasub82.9 ± 0.5kJ/molGSVerevkin, 1999Based on data from 288. - 318. K.; AC

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Method Reference Comment
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) A B C Reference Comment
343. - 505.85.543892635.051-30.066Stull, 1947Coefficents calculated by NIST from author's data.

Enthalpy of sublimation

DeltasubH (kJ/mol) Temperature (K) Method Reference Comment
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 physical and chemical property data is available from the following TRC products:


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

p-Cresol + Butylated Hydroxytoluene = 2Phenol, 2-(1,1-dimethylethyl)-4-methyl-

By formula: C7H8O + C15H24O = 2C11H16O

Quantity Value Units Method Reference Comment
Deltar-9.7 ± 1.8kJ/molEqkNesterova, Verevkin, et al., 1985liquid phase

p-Cresol + 1-Propene, 2-methyl- = Phenol, 2-(1,1-dimethylethyl)-4-methyl-

By formula: C7H8O + C4H8 = C11H16O

Quantity Value Units Method Reference Comment
Deltar62.7 ± 2.8kJ/molEqkVerevkin, Nesterova, et al., 1984gas phase

IR Spectrum

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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

Gas Phase Spectrum

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IR spectrum
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Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.

Additional Data

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Owner NIST Standard Reference Data Program
Collection (C) 2018 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin Sadtler Research Labs Under US-EPA Contract
State gas

This IR spectrum is from the NIST/EPA Gas-Phase Infrared Database .


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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Mass spectrum
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Additional Data

View image of digitized spectrum (can be printed in landscape orientation).

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Owner NIST Mass Spectrometry Data Center
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin Japan AIST/NIMC Database- Spectrum MS-NW-6144
NIST MS number 228732

All mass spectra in this site (plus many more) are available from the NIST/EPA/NIH Mass Spectral Library. Please see the following for information about the library and its accompanying search program.


Gas Chromatography

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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

Kovats' RI, non-polar column, isothermal

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Column type Active phase Temperature (C) I Reference Comment
PackedSE-30250.1345.Verevkin, Nesterov, et al., 1990He, NAWHMDS; Column length: 3. m

Van Den Dool and Kratz RI, non-polar column, temperature ramp

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Column type Active phase I Reference Comment
CapillaryBPX-51387.Aaslyng, Elmore, et al., 199850. m/0.32 mm/0.50 «mu»m, He, 4. K/min; Tstart: 40. C; Tend: 280. C

Van Den Dool and Kratz RI, non-polar column, custom temperature program

View large format table.

Column type Active phase I Reference Comment
CapillaryVF-5MS1352.2Mjøs, Meier, et al., 200650. m/0.25 mm/0.25 «mu»m, He; Program: 60C(2min) => 30C/min => 100C => 1C/min =>
CapillaryVF-5MS1353.1Mjøs, Meier, et al., 200650. m/0.25 mm/0.25 «mu»m, He; Program: 60C(2min) => 30C/min => 100C => 2C/min =>
CapillaryVF-5MS1355.Mjøs, Meier, et al., 200650. m/0.25 mm/0.25 «mu»m, He; Program: 60C(2min) => 30C/min => 100C => 4C/min =>

Van Den Dool and Kratz RI, polar column, temperature ramp

View large format table.

Column type Active phase I Reference Comment
CapillarySupelcowax-102235.Chung, 199960. m/0.25 mm/0.25 «mu»m, He, 35. C @ 5. min, 2. K/min, 195. C @ 90. min

References

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, 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]

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]

Verevkin, Nesterov, et al., 1990
Verevkin, S.P.; Nesterov, O.A.; Rempel, P.D.; Synkova, N.V.; Shashkin, N.P., Chromatographic determination of the products of condensation of alkylphenols with formic aldehyde, Zh. Anal. Khim., 1990, 43, 760-761. [all data]

Aaslyng, Elmore, et al., 1998
Aaslyng, M.D.; Elmore, J.S.; Mottram, D.S., Comparison of the aroma characteristics of acid-hydrolyzed and enzyme-hydrolyzed vegetable proteins produced from soy, J. Agric. Food Chem., 1998, 46, 12, 5225-5231, https://doi.org/10.1021/jf9806816 . [all data]

Mjøs, Meier, et al., 2006
Mjøs, S.A.; Meier, S.; Boitsov, S., Alkylphenol retention indices, J. Chromatogr. A, 2006, 1123, 1, 98-105, https://doi.org/10.1016/j.chroma.2006.05.002 . [all data]

Chung, 1999
Chung, H.Y., Volatile components in crabmeats of Charybdis feriatus, J. Agric. Food Chem., 1999, 47, 6, 2280-2287, https://doi.org/10.1021/jf981027t . [all data]


Notes

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, References