Phenol, 3-methyl-
- Formula: C7H8O
- Molecular weight: 108.1378
- IUPAC Standard InChI: InChI=1S/C7H8O/c1-6-3-2-4-7(8)5-6/h2-5,8H,1H3
- IUPAC Standard InChIKey: RLSSMJSEOOYNOY-UHFFFAOYSA-N
- CAS Registry Number: 108-39-4
- 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: m-Cresol; m-Cresole; m-Cresylic acid; m-Hydroxytoluene; m-Kresol; m-Methylphenol; m-Oxytoluene; m-Toluol; 1-Hydroxy-3-methylbenzene; 3-Cresol; 3-Hydroxytoluene; 3-Methylphenol; meta-Cresol; Cresol, meta; Rcra waste number U052; Cresol,m-; NSC 8768
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Reaction thermochemistry data
Go To: Top, Mass spectrum (electron ionization), UV/Visible spectrum, 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:
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
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Individual Reactions
C7H7O- + =
By formula: C7H7O- + H+ = C7H8O
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 348.2 ± 1.2 | kcal/mol | CIDC | Angel and Ervin, 2006 | gas phase; B |
| ΔrH° | 349.5 ± 2.1 | kcal/mol | G+TS | Fujio, McIver, et al., 1981 | gas phase; value altered from reference due to change in acidity scale; B |
| ΔrH° | 350.7 ± 2.3 | kcal/mol | G+TS | Kebarle and McMahon, 1977 | gas phase; B |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 342.7 ± 2.0 | kcal/mol | IMRE | Fujio, McIver, et al., 1981 | gas phase; value altered from reference due to change in acidity scale; B |
| ΔrG° | 343.8 ± 2.0 | kcal/mol | IMRE | Kebarle and McMahon, 1977 | gas phase; B |
+
= (
•
)
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 |
+
=
+
By formula: C9H10O2 + H2O = C7H8O + C2H4O2
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -4.39 ± 0.14 | kcal/mol | Cm | Sunner, 1957 | liquid phase; Heat of hydrolysis; ALS |
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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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 | NIST Mass Spectrometry Data Center, 1998. |
| NIST MS number | 291279 |
UV/Visible 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.
Spectrum
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Additional Data
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| Source | Lang (editor), 1961 |
|---|---|
| Owner | INEP CP RAS, NIST OSRD Collection (C) 2007 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
| Origin | INSTITUTE OF ENERGY PROBLEMS OF CHEMICAL PHYSICS, RAS |
| Source reference | RAS UV No. 19729 |
| Instrument | Beckman DU |
| Melting point | 10.9 |
References
Go To: Top, Reaction thermochemistry data, Mass spectrum (electron ionization), UV/Visible spectrum, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Angel and Ervin, 2006
Angel, L.A.; Ervin, K.M.,
Gas-phase acidities and O-H bond dissociation enthalpies of phenol, 3-methylphenol, 2,4,6-trimethylphenol, and ethanoic acid,
J. Phys. Chem. A, 2006, 110, 35, 10392-10403, https://doi.org/10.1021/jp0627426
. [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]
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]
Sunner, 1957
Sunner, S.,
The heat of hydrolysis of i-propenyl acetate and m-cresyl acetate and the heat of formation of acetone,
Acta Chem. Scand., 1957, 11, 1757-1760. [all data]
Lang (editor), 1961
Lang (editor), L.,
Absorption Spectra in the Ultraviolet and Visible Region, 1961, 2, 141. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Mass spectrum (electron ionization), UV/Visible spectrum, References
- Symbols used in this document:
T Temperature ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔrS° Entropy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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