Phenol, 2,4,5-trimethyl-
- Formula: C9H12O
- Molecular weight: 136.1910
- IUPAC Standard InChI: InChI=1S/C9H12O/c1-6-4-8(3)9(10)5-7(6)2/h4-5,10H,1-3H3
- IUPAC Standard InChIKey: VXSCPERJHPWROZ-UHFFFAOYSA-N
- CAS Registry Number: 496-78-6
- 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: Pseudocumenol; 1-Hydroxy-2,4,5-trimethylbenzene; 2,4,5-Trimethylphenol; 5-Hydroxypseudocumene
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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 |
|---|---|---|---|---|---|
| Tboil | 505. ± 8. | K | AVG | N/A | Average of 8 values; Individual data points |
| Quantity | Value | Units | Method | Reference | Comment |
| Tfus | 344. ± 3. | K | AVG | N/A | Average of 8 values; Individual data points |
Enthalpy of vaporization
| ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 56.5 | 394. | A | Stephenson and Malanowski, 1987 | Based on data from 379. to 505. K. See also von Terres, Gebert, et al., 1955.; 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 |
|---|---|---|---|---|---|
| 379.7 to 505. | 4.71769 | 2070.584 | -65.573 | von Terres, Gebert, et al., 1955, 2 | Coefficents calculated by NIST from author's data. |
Gas Chromatography
Go To: Top, 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
Normal alkane RI, polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | DB-FFAP | 2200. | Czerny, Brueckner, et al., 2011 | 30. m/0.32 mm/0.25 μm, Helium, 40. C @ 2. min, 8. K/min, 230. C @ 5. min |
References
Go To: Top, Phase change data, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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]
von Terres, Gebert, et al., 1955
von Terres, E.; Gebert, F.; Hulsemann, H.; Petereit, H.; Toepsch, H.; Ruppert, W.,
Brennst.-Chem., 1955, 36, 272. [all data]
von Terres, Gebert, et al., 1955, 2
von Terres, E.; Gebert, F.; Hulsemann, H.; Petereit, H.; Toepsch, H.; Ruppert, W.,
Zur Kenntnis der physikalisch-chemischen Grundlagen der Gewinnung und Zerlegung der Phenolfraktionen von Steinkohlenteer und Braunkohlenschwelteer. IV. Mitteilung Die Dampfdrucke von Phenol und Phenolderivaten,
Brennst.-Chem., 1955, 36, 272-274. [all data]
Czerny, Brueckner, et al., 2011
Czerny, M.; Brueckner, R.; Kirchoff, E.; Schmitt, R.; Buettner, A.,
The influence of molecular structure on odor qualities and odor detection thresholds of volatile alkylated phenols,
Chem. Senses, 2011, 1-15, retrieved from http://chemie.oxfordjournals.org. [all data]
Notes
Go To: Top, Phase change data, Gas Chromatography, References
- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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