Phenol, 2,5-dimethyl-
- Formula: C8H10O
- Molecular weight: 122.1644
- IUPAC Standard InChIKey: NKTOLZVEWDHZMU-UHFFFAOYSA-N
- CAS Registry Number: 95-87-4
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: 2,5-Xylenol; p-Xylenol; 1-Hydroxy-2,5-dimethylbenzene; 1,2,5-Xylenol; 2,5-Dimethylphenol; 3,6-Dimethylphenol; 3,6-Xylenol; 6-Methyl-m-cresol; 1,4-Dimethyl-2-hydroxybenzene; 2,5-Dmp; 2-Hydroxy-p-xylene; NSC 2599
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Condensed phase thermochemistry data
Go To: Top, Phase change data, Mass spectrum (electron ionization), References, Notes
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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°solid | -58.86 ± 0.24 | kcal/mol | Ccb | Andon, Biddiscombe, et al., 1960 | |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°solid | -1035.04 ± 0.22 | kcal/mol | Ccb | Andon, Biddiscombe, et al., 1960 | Corresponding ΔfHºsolid = -58.94 kcal/mol (simple calculation by NIST; no Washburn corrections) |
Phase change data
Go To: Top, Condensed phase thermochemistry data, Mass spectrum (electron ionization), 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:
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
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 484. ± 1. | K | AVG | N/A | Average of 9 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 347.9 ± 0.8 | K | AVG | N/A | Average of 14 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 706.90 | K | N/A | Ambrose, Broderick, et al., 1974 | Uncertainty assigned by TRC = 0.2 K; TRC |
Tc | 723.05 | K | N/A | Ambrose, 1963 | Uncertainty assigned by TRC = 0.5 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔsubH° | 20.31 ± 0.06 | kcal/mol | V | Andon, Biddiscombe, et al., 1960 | ALS |
ΔsubH° | 20.2 | kcal/mol | N/A | Andon, Biddiscombe, et al., 1960 | DRB |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
12.4 | 442. | A,GS,EB | Stephenson and Malanowski, 1987 | Based on data from 427. to 485. K. See also Andon, Biddiscombe, et al., 1960, 2.; AC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (atm)
T = temperature (K)
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Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
417.07 to 484.89 | 4.1228 | 1558.233 | -106.33 | Andon, Biddiscombe, et al., 1960 | Coefficents calculated by NIST from author's data. |
Enthalpy of sublimation
ΔsubH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
20.3 ± 0.060 | 282. to 323. | GS | Andon, Biddiscombe, et al., 1960, 2 | See also Cox and Pilcher, 1970 and Stephenson and Malanowski, 1987.; AC |
15.3 ± 0.2 | 348. | V | Wolf and Weghofer, 1938 | ALS |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
5.5870 | 348.0 | N/A | Poeti, Fanelli, et al., 1982 | DH |
3.301 | 348.1 | DSC | Jamróz, Palczewska-Tulinska, et al., 1998 | AC |
5.588 | 348. | N/A | Acree, 1991 | AC |
Entropy of fusion
ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
16.05 | 348.0 | Poeti, Fanelli, et al., 1982 | DH |
Mass spectrum (electron ionization)
Go To: Top, Condensed phase thermochemistry data, Phase change 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 by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
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Due to licensing restrictions, this spectrum cannot be downloaded.
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-1850 |
NIST MS number | 228982 |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, 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.
Andon, Biddiscombe, et al., 1960
Andon, R.J.L.; Biddiscombe, D.P.; Cox, J.D.; Handley, R.; Harrop, D.; Herington, E.F.G.; Martin, J.F.,
Thermodynamic properties of organic oxygen compounds. Part I. Preparation and physical properties of pure phenol, cresols, and xylenols,
J. Chem. Soc., 1960, 5246-5254. [all data]
Ambrose, Broderick, et al., 1974
Ambrose, D.; Broderick, B.E.; Townsend, R.,
The Critical Temperatures and Pressures of Thirty Organic Compounds,
J. Appl. Chem. Biotechnol., 1974, 24, 359. [all data]
Ambrose, 1963
Ambrose, D.,
Critical Temperatures of Some Phenols and Other Organic Compounds,
Trans. Faraday Soc., 1963, 59, 1988. [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]
Andon, Biddiscombe, et al., 1960, 2
Andon, R.J.L.; Biddiscombe, D.P.; Cox, J.D.; Handley, R.; Harrop, D.; Herington, E.F.G.; Martin, J.F.,
1009. Thermodynamic properties of organic oxygen compounds. Part I. Preparation and physical properties of pure phenol, cresols, and xylenols,
J. Chem. Soc., 1960, 5246, https://doi.org/10.1039/jr9600005246
. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press Inc., London, 1970, 643. [all data]
Wolf and Weghofer, 1938
Wolf, K.L.; Weghofer, H.,
Uber sublimationswarmen,
Z. Phys. Chem., 1938, 39, 194-208. [all data]
Poeti, Fanelli, et al., 1982
Poeti, G.; Fanelli, E.; Braghetti, M.,
A differential scanning calorimetric study of some phenol derivatives,
J. Therm. Anal., 1982, 24(2), 273-279. [all data]
Jamróz, Palczewska-Tulinska, et al., 1998
Jamróz, Malgorzata E.; Palczewska-Tulinska, Marcela; Wyrzykowska-Stankiewicz, Danuta; Szafranski, Andrzej M.; Polaczek, Jerzy; Dobrowolski, Jan Cz.; Jamróz, Michal H.; Mazurek, Aleksander P.,
The urea--phenol(s) systems,
Fluid Phase Equilibria, 1998, 152, 2, 307-326, https://doi.org/10.1016/S0378-3812(98)90206-0
. [all data]
Acree, 1991
Acree, William E.,
Thermodynamic properties of organic compounds: enthalpy of fusion and melting point temperature compilation,
Thermochimica Acta, 1991, 189, 1, 37-56, https://doi.org/10.1016/0040-6031(91)87098-H
. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, Mass spectrum (electron ionization), References
- Symbols used in this document:
Tboil Boiling point Tc Critical temperature Tfus Fusion (melting) point ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion ΔsubH Enthalpy of sublimation ΔsubH° Enthalpy of sublimation at standard conditions ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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