Phenol, 2-methyl-
- Formula: C7H8O
- Molecular weight: 108.1378
- IUPAC Standard InChIKey: QWVGKYWNOKOFNN-UHFFFAOYSA-N
- CAS Registry Number: 95-48-7
- 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: o-Cresol; o-Hydroxytoluene; o-Methylphenol; o-Methylphenylol; o-Oxytoluene; 1-Hydroxy-2-methylbenzene; 2-Cresol; 2-Hydroxytoluene; 2-Methylphenol; Orthocresol; o-Kresol; Rcra waste number U052; o-Cresylic acid; 1-Methyl-2-hydroxybenzene; NSC 23076; o-Toluol
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry 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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -30.67 ± 0.21 | kcal/mol | Ccb | Cox, 1961 | ALS |
ΔfH°gas | -30.74 ± 0.22 | kcal/mol | Ccb | Andon, Biddiscombe, et al., 1960 | ALS |
Constant pressure heat capacity of gas
Cp,gas (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
9.135 | 50. | Kudchadker S.A., 1978 | Selected entropy values at 298.15 and 400 K are lower than the experimental ones by 2.2 and 2.1 J/mol*K, respectively. The discrepancy is close to the experimental uncertainty. The same entropy values calculated by [ Green J.H.S., 1962] are greater than the observed by 2.8 and 3.9 J/mol*K.; GT |
14.14 | 100. | ||
17.95 | 150. | ||
21.81 | 200. | ||
28.164 | 273.15 | ||
30.425 | 298.15 | ||
30.593 | 300. | ||
39.271 | 400. | ||
46.675 | 500. | ||
52.684 | 600. | ||
57.565 | 700. | ||
61.587 | 800. | ||
64.955 | 900. | ||
67.806 | 1000. | ||
70.237 | 1100. | ||
72.323 | 1200. | ||
74.118 | 1300. | ||
75.672 | 1400. | ||
77.020 | 1500. |
Condensed phase thermochemistry data
Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry 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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°liquid | -48.3 | kcal/mol | Ccb | Pushin, 1954 | Author's hf298_condensed=-50.6 kcal/mol; ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -883.3 | kcal/mol | Ccb | Pushin, 1954 | Author's hf298_condensed=-50.6 kcal/mol; Corresponding ΔfHºliquid = -48.3 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔfH°solid | -48.84 | kcal/mol | Ccb | Cox, 1961 | ALS |
ΔfH°solid | -48.91 ± 0.22 | kcal/mol | Ccb | Andon, Biddiscombe, et al., 1960 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°solid | -882.79 ± 0.10 | kcal/mol | Ccb | Cox, 1961 | Corresponding ΔfHºsolid = -48.83 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
ΔcH°solid | -882.72 ± 0.24 | kcal/mol | Ccb | Andon, Biddiscombe, et al., 1960 | Corresponding ΔfHºsolid = -48.90 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
ΔcH°solid | -883.7 | kcal/mol | Ccb | Barker, 1925 | Author was aware that data differs from previously reported values; Corresponding ΔfHºsolid = -47.9 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
Quantity | Value | Units | Method | Reference | Comment |
S°solid,1 bar | 39.541 | cal/mol*K | N/A | Andon, Counsell, et al., 1967 | DH |
Constant pressure heat capacity of liquid
Cp,liquid (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
55.83 | 313. | Rastorguev and Ganiev, 1967 | T = 313 to 373 K.; DH |
53.99 | 283. | Bramley, 1916 | Mean value, 0 to 20 C.; DH |
Constant pressure heat capacity of solid
Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
36.941 | 298.15 | Andon, Counsell, et al., 1967 | T = 10 to 400 K.; DH |
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
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
DRB - Donald R. Burgess, Jr.
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 464.3 ± 0.6 | K | AVG | N/A | Average of 11 out of 12 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 304. ± 1. | K | AVG | N/A | Average of 15 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 304.20 | K | N/A | Andon, Counsell, et al., 1967, 2 | Uncertainty assigned by TRC = 0.02 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 697.6 | K | N/A | Delaunois, 1968 | Uncertainty assigned by TRC = 0.4 K; TRC |
Tc | 697.55 | K | N/A | Ambrose, 1963 | Uncertainty assigned by TRC = 0.23 K; TRC |
Tc | 695.15 | K | N/A | Glaser and Ruland, 1957 | Uncertainty assigned by TRC = 2. K; TRC |
Tc | 695.5 | K | N/A | Radice, 1899 | Uncertainty assigned by TRC = 3. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 41.15 | atm | N/A | Delaunois, 1968 | Uncertainty assigned by TRC = 0.3871 atm; TRC |
Pc | 48.000 | atm | N/A | Glaser and Ruland, 1957 | Uncertainty assigned by TRC = 3.0000 atm; TRC |
Pc | 49.4000 | atm | N/A | Herz and Neukirch, 1923 | Uncertainty assigned by TRC = 0.6999 atm; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 10.73 | kcal/mol | C | Glaser and Ruland, 1957 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔsubH° | 17.6 ± 0.1 | kcal/mol | C | Richard, Bernardes, et al., 2007 | AC |
ΔsubH° | 18.2 | kcal/mol | N/A | Cox, 1961 | DRB |
ΔsubH° | 18.17 ± 0.18 | kcal/mol | V | Andon, Biddiscombe, et al., 1960 | ALS |
ΔsubH° | 18.2 | kcal/mol | N/A | Andon, Biddiscombe, et al., 1960 | DRB |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
14.0 | 319. | A | Stephenson and Malanowski, 1987 | Based on data from 304. to 409. K.; AC |
12.0 | 414. | A | Stephenson and Malanowski, 1987 | Based on data from 399. to 470. K.; AC |
11.0 | 478. | A | Stephenson and Malanowski, 1987 | Based on data from 463. to 526. K.; AC |
10.5 | 532. | A | Stephenson and Malanowski, 1987 | Based on data from 517. to 630. K.; AC |
12.3 | 398. | GS,EB | Stephenson and Malanowski, 1987 | Based on data from 383. to 473. K. See also Andon, Biddiscombe, et al., 1960, 2 and Kkykj and Repas, 1973.; AC |
11.5 | 438. | N/A | Goldblum, Martin, et al., 1947 | Based on data from 415. to 462. K.; 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 |
---|---|---|---|---|---|
393.37 to 464.10 | 3.96204 | 1391.332 | -112.974 | Dreisbach and Shrader, 1949 | Coefficents calculated by NIST from author's data. |
Enthalpy of sublimation
ΔsubH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
17.9 | 288. | A | Stephenson and Malanowski, 1987 | Based on data from 273. to 303. K.; AC |
18.2 ± 0.2 | 288. | N/A | Andon, Biddiscombe, et al., 1960, 2 | Based on data from 273. to 303. K. See also Cox and Pilcher, 1970.; AC |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
3.5373 | 304.05 | N/A | Meva'a and Lichanot, 1990 | DH |
3.3313 | 303.0 | N/A | Poeti, Fanelli, et al., 1982 | DH |
3.7811 | 304.20 | N/A | Andon, Counsell, et al., 1967 | DH |
3.54 | 305.4 | DSC | Richard, Bernardes, et al., 2007 | AC |
3.80 | 304.1 | DSC | Jamróz, Palczewska-Tulinska, et al., 1998 | AC |
3.781 | 304.2 | N/A | Domalski and Hearing, 1996 | AC |
3.54 | 304.1 | N/A | Meva'a and Lichanot, 1990 | AC |
Entropy of fusion
ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
12. | 304.05 | Meva'a and Lichanot, 1990 | DH |
10.99 | 303.0 | Poeti, Fanelli, et al., 1982 | DH |
12.43 | 304.20 | Andon, Counsell, et al., 1967 | DH |
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
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
ALS - 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
By formula: Br- + C7H8O = (Br- • C7H8O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 20.6 ± 1.8 | kcal/mol | IMRE | Paul and Kebarle, 1990 | gas phase; ΔGaff at 423 K; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 23. | cal/mol*K | N/A | Paul and Kebarle, 1990 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 10.9 ± 1.0 | kcal/mol | IMRE | Paul and Kebarle, 1990 | gas phase; ΔGaff at 423 K; B |
Free energy of reaction
ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
10.9 | 423. | PHPMS | Paul and Kebarle, 1990 | gas phase; Entropy change calculated or estimated; M |
C7H7O- + =
By formula: C7H7O- + H+ = C7H8O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 349.5 ± 2.2 | kcal/mol | G+TS | Fujio, McIver, et al., 1981 | gas phase; value altered from reference due to change in acidity scale; B |
ΔrH° | 350.2 ± 2.9 | kcal/mol | G+TS | Kebarle and McMahon, 1977 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 342.0 ± 2.0 | kcal/mol | IMRE | Fujio, McIver, et al., 1981 | gas phase; value altered from reference due to change in acidity scale; B |
ΔrG° | 342.7 ± 2.0 | kcal/mol | IMRE | Kebarle and McMahon, 1977 | gas phase; B |
By formula: C15H24O + C7H8O = C11H16O + C11H16O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.60 ± 0.84 | kcal/mol | Eqk | Nesterova, Verevkin, et al., 1985 | liquid phase; ALS |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Cox, 1961
Cox, J.D.,
The heats of combustion of phenol and the three cresols,
Pure Appl. Chem., 1961, 2, 125-128. [all data]
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]
Kudchadker S.A., 1978
Kudchadker S.A.,
Ideal gas thermodynamic properties of phenol and cresols,
J. Phys. Chem. Ref. Data, 1978, 7, 417-423. [all data]
Green J.H.S., 1962
Green J.H.S.,
Normal frequencies, thermodynamic properties and equilibrium of the cresols,
Chem. Ind. (London), 1962, 1575-1576. [all data]
Pushin, 1954
Pushin, N.A.,
Heats of combustion and heats of formation of isomeric organic compounds,
Bull. Soc. Chim. Belgrade, 1954, 19, 531-547. [all data]
Barker, 1925
Barker, M.F.,
Calorific value and constitution,
J. Phys. Chem., 1925, 29, 1345-1363. [all data]
Andon, Counsell, et al., 1967
Andon, R.J.L.; Counsell, J.F.; Lees, E.B.; Martin, J.F.; Mash, C.J.,
Thermodynamic properties of organic oxygen compounds. Part 17. Low-temperature heat capacity and entropy of the cresols,
Trans. Faraday Soc., 1967, 63, 1115-1121. [all data]
Rastorguev and Ganiev, 1967
Rastorguev, Yu.L.; Ganiev, Yu.A.,
Study of the heat capacity of selected solvents,
Izv. Vyssh. Uchebn. Zaved. Neft Gaz. 10, 1967, No.1, 79-82. [all data]
Bramley, 1916
Bramley, A.,
The study of binary mixtures. Part IV. Heats of reaction and specific heats,
J. Chem. Soc. (London), 1916, 109, 496-515. [all data]
Andon, Counsell, et al., 1967, 2
Andon, R.J.L.; Counsell, J.F.; Lees, E.B.; Martin, J.F.; Mash, C.J.,
Thermodynamic Properties of Organic Oxygen Compounds Part 17. Low- temperature Heat Capacity and Entropy of the Cresols,
Trans. Faraday Soc., 1967, 63, 1115. [all data]
Delaunois, 1968
Delaunois, C.,
Effect of the Filling Rate of a Reactor on the Vapor Tension and the Temperature at the Beginning of Cracking of Phenols at High Pressures,
Ann. Mines Belg., 1968, No. 1, 9-16. [all data]
Ambrose, 1963
Ambrose, D.,
Critical Temperatures of Some Phenols and Other Organic Compounds,
Trans. Faraday Soc., 1963, 59, 1988. [all data]
Glaser and Ruland, 1957
Glaser, F.; Ruland, H.,
Untersuchungsen über dampfdruckkurven und kritische daten einiger technisch wichtiger organischer substanzen,
Chem. Ing. Techn., 1957, 29, 772. [all data]
Radice, 1899
Radice, G.,
, Ph. D. Thesis, Univ. of Geneve, 1899. [all data]
Herz and Neukirch, 1923
Herz, W.; Neukirch, E.,
On Knowldge of the Critical State,
Z. Phys. Chem., Stoechiom. Verwandtschaftsl., 1923, 104, 433-50. [all data]
Richard, Bernardes, et al., 2007
Richard, Laurence S.; Bernardes, Carlos E.S.; Diogo, Hermínio P.; Leal, João P.; Minas da Piedade, Manuel E.,
Energetics of Cresols and of Methylphenoxyl Radicals,
J. Phys. Chem. A, 2007, 111, 35, 8741-8748, https://doi.org/10.1021/jp073515m
. [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]
Kkykj and Repas, 1973
Kkykj, J.; Repas, M.,
Petrochemia, 1973, 13, 179. [all data]
Goldblum, Martin, et al., 1947
Goldblum, K.B.; Martin, R.W.; Young, R.B.,
Vapor Pressure Data for Phenols,
Ind. Eng. Chem., 1947, 39, 11, 1474-1476, https://doi.org/10.1021/ie50455a017
. [all data]
Dreisbach and Shrader, 1949
Dreisbach, R.R.; Shrader, S.A.,
Vapor Pressure--Temperature Data on Some Organic Compounds,
Ind. Eng. Chem., 1949, 41, 12, 2879-2880, https://doi.org/10.1021/ie50480a054
. [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]
Meva'a and Lichanot, 1990
Meva'a, L.M.; Lichanot, A.,
Proprietes thermodynamiques en phase condensee des ortho, meta et para fluorotoluene, cresol et toluidine,
Thermochim. Acta, 1990, 158, 335-345. [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]
Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D.,
Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III,
J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985
. [all data]
Paul and Kebarle, 1990
Paul, G.J.C.; Kebarle, P.,
Stabilities in the Gas Phase of the Hydrogen Bonded Complexes, YC6H4OH-X-, of Substituted Phenols, YC6H4OH, with the Halide Anions X-(Cl-, Br-),
Can. J. Chem., 1990, 68, 11, 2070, https://doi.org/10.1139/v90-316
. [all data]
Fujio, McIver, et al., 1981
Fujio, M.; McIver, R.T., Jr.; Taft, R.W.,
Effects on the acidities of phenols from specific substituent-solvent interactions. Inherent substituent parameters from gas phase acidities,
J. Am. Chem. Soc., 1981, 103, 4017. [all data]
Kebarle and McMahon, 1977
Kebarle, P.; McMahon, T.B.,
Intrinsic Acidities of Substituted Phenols and Benzoic Acids Determined by Gas Phase Proton Transfer Equilibria,
J. Am. Chem. Soc., 1977, 99, 7, 2222, https://doi.org/10.1021/ja00449a032
. [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, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, References
- Symbols used in this document:
Cp,gas Constant pressure heat capacity of gas Cp,liquid Constant pressure heat capacity of liquid Cp,solid Constant pressure heat capacity of solid Pc Critical pressure S°solid,1 bar Entropy of solid at standard conditions (1 bar) T Temperature Tboil Boiling point Tc Critical temperature Tfus Fusion (melting) point Ttriple Triple point temperature ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔfH°solid Enthalpy of formation of solid 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 ΔsubH Enthalpy of sublimation ΔsubH° Enthalpy of sublimation at standard conditions ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy 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 the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
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