Phenol, 2-methyl-5-(1-methylethyl)-
- Formula: C10H14O
- Molecular weight: 150.2176
- IUPAC Standard InChIKey: RECUKUPTGUEGMW-UHFFFAOYSA-N
- CAS Registry Number: 499-75-2
- 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: Carvacrol; p-Cymen-2-ol; Antioxine; Isothymol; Karvakrol; 2-Hydroxy-p-cymene; 2-Methyl-5-isopropylphenol; 5-Isopropyl-2-methylphenol; 2-Methyl-5-(1-methylethyl)phenol; o-Cresol, 5-isopropyl-; o-Thymol; p-Cymene, 2-hydroxy-; Isopropyl-o-cresol; Phenol, 5-isopropyl-2-methyl-; 1-Hydroxy-2-methyl-5-isopropylbenzene; 2-p-Cymenol; 5-Isopropyl-o-cresol; 3-Isopropyl-6-methylphenol; Phenol, 3-isopropyl-6-methyl-; Oxycymol; 6-methyl-3-isopropylphenol; NSC 6188
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Gas phase thermochemistry data
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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -194.2 | kJ/mol | Ccb | Bertholon, Giray, et al., 1971 | see Lamartine and Perrin, 1969 |
Condensed 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°liquid | -270. | kJ/mol | Ccb | Bertholon, Giray, et al., 1971 | see Lamartine and Perrin, 1969 |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -5665. | kJ/mol | Ccb | Bertholon, Giray, et al., 1971 | see Lamartine and Perrin, 1969; Corresponding ΔfHºliquid = -270. kJ/mol (simple calculation by NIST; no Washburn corrections) |
ΔcH°liquid | -5650. ± 10. | kJ/mol | Ccb | Lamartine and Perrin, 1969 | Corresponding ΔfHºliquid = -290. kJ/mol (simple calculation by NIST; no Washburn corrections) |
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
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 510. ± 1. | K | AVG | N/A | Average of 8 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 276.65 | K | N/A | Karr, 1957 | Uncertainty assigned by TRC = 2. K; TRC |
Tfus | 276.65 | K | N/A | Carpenter and Easter, 1955 | Uncertainty assigned by TRC = 2. K; TRC |
Tfus | 273.65 | K | N/A | Gardner, Procofief, et al., 1935 | Uncertainty assigned by TRC = 3. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 68.2 | kJ/mol | GC | van Roon, Parsons, et al., 2002 | AC |
ΔvapH° | 77.74 | kJ/mol | C | Bertholon, Giray, et al., 1971 | see Lamartine and Perrin, 1969; ALS |
ΔvapH° | 75.8 | kJ/mol | N/A | Bertholon, Giray, et al., 1971 | DRB |
ΔvapH° | 59. ± 3. | kJ/mol | V | Lamartine and Perrin, 1969 | ALS |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
56.5 | 358. | A | Stephenson and Malanowski, 1987 | Based on data from 343. to 510. K. See also Stull, 1947.; AC |
59.4 | 402. | EB | Lamartine and Perrin, 1969, 2 | Based on data from 387. to 512. K.; AC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)
View plot Requires a JavaScript / HTML 5 canvas capable browser.
Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
343. to 510. | 5.34179 | 2549.857 | -32.705 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Bertholon, Giray, et al., 1971
Bertholon, G.; Giray, M.; Perrin, R.; Vincent-Falquet-Berny, M.F.,
No. 532. - Etude physicochimique des phenols. OX. - Ethanlpies de combustion et energies de resonance des alcoyl et aryphenols,
Bull. Soc. Chim. France, 1971, 3180-3187. [all data]
Lamartine and Perrin, 1969
Lamartine, R.; Perrin, R.,
Etude physiocochimique des phenols. VIII. Caracterisation physicochimique des methyl-2 isopropylphenols ou carvacrols,
Bull. Soc. Chim. France, 1969, 10, 443-445. [all data]
Karr, 1957
Karr, C.,
, U. S. Bur. Mines, Inform. Circ. IC 7802, 1957. [all data]
Carpenter and Easter, 1955
Carpenter; Easter,
J. Org. Chem., 1955, 20, 401. [all data]
Gardner, Procofief, et al., 1935
Gardner; Procofief; Jusov; Casselli,
C. R. Hebd. Seances Acad. Sci., 1935, 200, 1114. [all data]
van Roon, Parsons, et al., 2002
van Roon, André; Parsons, John R.; Govers, Harrie A.J.,
Gas chromatographic determination of vapour pressure and related thermodynamic properties of monoterpenes and biogenically related compounds,
Journal of Chromatography A, 2002, 955, 1, 105-115, https://doi.org/10.1016/S0021-9673(02)00200-5
. [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]
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]
Lamartine and Perrin, 1969, 2
Lamartine, R.; Perrin, R.,
Bull. Soc. Chim. Fr., 1969, 2, 443. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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