Benzenemethanol, α,α-dimethyl-
- Formula: C9H12O
- Molecular weight: 136.1910
- IUPAC Standard InChIKey: BDCFWIDZNLCTMF-UHFFFAOYSA-N
- CAS Registry Number: 617-94-7
- 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: α-Cumyl alcohol; 2-Phenylisopropanol; Benzyl alcohol, α,α-dimethyl-; α,α-Dimethylbenzyl alcohol; Dimethylphenylcarbinol; Dimethylphenylmethanol; 1-Hydroxycumene; 2-Phenyl-2-propanol; 2-Propanol, 2-phenyl-; α,α-Dimethylbenzenemethanol; Phenyldimethylcarbinol; 1-Methyl-1-phenylethanol; 2-phenylpropan-2-ol; 2-Hydroxy-2-phenylpropane; NSC 1261; NSC 212537
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Condensed phase thermochemistry data
Go To: Top, Phase change data, Gas Chromatography, 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 | -250.4 ± 2.3 | kJ/mol | Ccb | Van-Chin-Syan, Dolbneva, et al., 1984 | see Dolbneva, Dikii, et al., 1984 |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°solid | -5006.2 ± 2.2 | kJ/mol | Ccb | Van-Chin-Syan, Dolbneva, et al., 1984 | see Dolbneva, Dikii, et al., 1984; Corresponding ΔfHºsolid = -250.4 kJ/mol (simple calculation by NIST; no Washburn corrections) |
Phase change data
Go To: Top, Condensed phase thermochemistry data, Gas Chromatography, 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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 475.2 | K | N/A | Weast and Grasselli, 1989 | BS |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 310. | K | N/A | Dolbneva, Dikii, et al., 1982 | Crystal phase 1 phase; Uncertainty assigned by TRC = 1. K; TRC |
Tfus | 346. | K | N/A | Welsh and Drake, 1938 | Uncertainty assigned by TRC = 3. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 65.0 ± 0.5 | kJ/mol | GS | Verevkin, 1999 | Based on data from 311. to 338. K.; AC |
Quantity | Value | Units | Method | Reference | Comment |
ΔsubH° | 82.3 ± 0.7 | kJ/mol | N/A | Verevkin, 1999 | AC |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
63.4 ± 0.5 | 325. | GS | Verevkin, 1999 | Based on data from 311. to 338. K.; AC |
52.9 | 406. | A | Stephenson and Malanowski, 1987 | Based on data from 391. to 423. K.; AC |
Enthalpy of sublimation
ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
82.8 ± 0.7 | 289. | GS | Verevkin, 1999 | Based on data from 276. to 302. K.; AC |
87.5 ± 2.6 | 294. | V | Van-Chin-Syan, Dolbneva, et al., 1984 | see Dolbneva, Dikii, et al., 1984; ALS |
Gas Chromatography
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
Kovats' RI, non-polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Packed | Apiezon L | 130. | 1076. | Wehrli and Kováts, 1959 | Celite; Column length: 2.25 m |
Van Den Dool and Kratz RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | HP-5MS | 1080. | Kallio, Jussila, et al., 2006 | 20. m/0.25 mm/0.25 μm, 60. C @ 4. min, 5. K/min, 240. C @ 15. min |
Capillary | DB-5 | 1089.6 | Xu, van Stee, et al., 2003 | 30. m/0.25 mm/1. μm, He, 2.5 K/min; Tstart: 50. C; Tend: 200. C |
Van Den Dool and Kratz RI, polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | DB-Wax | 1776. | Gurbuz O., Rouseff J.M., et al., 2006 | 60. m/0.25 mm/0.25 μm, He, 7. K/min, 265. C @ 5. min; Tstart: 40. C |
Van Den Dool and Kratz RI, polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Carbowax 20M | 1782. | Whitfield, Shea, et al., 1981 | Column length: 150. m; Column diameter: 0.75 mm; Program: not specified |
Normal alkane RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | HP-5 MS | 1098. | Xu, Han, et al., 2012 | 30. m/0.25 mm/0.25 μm, 60. C @ 2. min, 15. K/min, 300. C @ 10. min |
Capillary | VF-5 MS | 1089. | Leffingwell and Alford, 2011 | 60. m/0.32 mm/0.25 μm, Helium, 2. K/min, 260. C @ 28. min; Tstart: 30. C |
Capillary | VF-5 MS | 1090. | Leffingwell and Alford, 2011 | 60. m/0.32 mm/0.25 μm, Helium, 2. K/min, 260. C @ 28. min; Tstart: 30. C |
Capillary | HP-5 MS | 1090. | Radulovic, Blagojevic, et al., 2010 | 30. m/0.25 mm/0.25 μm, Helium, 5. K/min, 290. C @ 10. min; Tstart: 70. C |
Capillary | HP-5 MS | 1098. | Xu, Han, et al., 2009 | 30. m/0.25 mm/0.25 μm, Helium, 60. C @ 2. min, 15. K/min, 300. C @ 10. min |
Capillary | HP-1 | 1057. | Castel, Fernandez, et al., 2006 | 50. m/0.2 mm/0.33 μm, He, 60. C @ 4. min, 2. K/min, 250. C @ 30. min |
Capillary | BPX-5 | 1102. | Dickschat, Martens, et al., 2005 | 25. m/0.22 mm/0.25 μm, He, 50. C @ 5. min, 5. K/min; Tend: 320. C |
Capillary | Ultra-2 | 1095. | King, Matthews, et al., 1995 | 50. m/0.32 mm/0.52 μm, He, 40. C @ 3. min, 4. K/min, 250. C @ 30. min |
Normal alkane RI, polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | HP-Innowax | 1770. | Soria, Sanz, et al., 2008 | 50. m/0.20 mm/0.20 μm, Helium, 45. C @ 2. min, 4. K/min, 190. C @ 50. min |
Capillary | DB-Wax | 1759. | Umano, Nakahara, et al., 1999 | 60. m/0.25 mm/0.25 μm, He, 40. C @ 2. min, 2. K/min; Tend: 200. C |
Capillary | PEG-20M | 1779. | Kubota, Nakamoto, et al., 1991 | N2, 2. K/min; Column length: 50. m; Column diameter: 0.25 mm; Tstart: 60. C; Tend: 180. C |
Normal alkane RI, polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Supelcowax 10 | 1770. | Soria, Martinez-Castro, et al., 2008 | 50. m/0.25 mm/0.25 μm, Helium; Program: 45 0C (15 min) 3 0C/min -> 75 0C 5 0C/min -> 180 0C (10 min) |
References
Go To: Top, Condensed phase thermochemistry data, 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.
Van-Chin-Syan, Dolbneva, et al., 1984
Van-Chin-Syan, Yu.Ya.; Dolbneva, T.N.; Dikii, M.A.; Cuchmarev, S.K.,
Thermochemistry of derivatives of isopropylbenzene and p-diisopropylbenzene,
Russ. J. Phys. Chem. (Engl. Transl.), 1984, 58, 1783-1785. [all data]
Dolbneva, Dikii, et al., 1984
Dolbneva, T.N.; Dikii, M.A.; Wang, C.H.; Gevus, O.I.,
Thermodynamic properties of derivatives of diisopropylbenzene, Deposited Document, SPSTL 293 Khp-D82. Chem. Abst. 101:22824c, 1984, 1-6. [all data]
Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]
Dolbneva, Dikii, et al., 1982
Dolbneva, T.N.; Dikii, M.A.; Van-Chin-Syan, Yu.Ya.; Gevus, O.I.,
Thermodynamic properties of diisopropylbenzene derivatives,
Deposited Doc. ONIITEkhim Cherkassy, 1982, Doc. No. 293 khp - 82, 1982. [all data]
Welsh and Drake, 1938
Welsh, L.H.; Drake, N.L.,
The Condensation of Tertiary Aryl Substituted Carbinos with Phenol in the Presence of Aluminum Chloride,
J. Am. Chem. Soc., 1938, 60, 59. [all data]
Verevkin, 1999
Verevkin, Sergey P.,
Strain Effects in Phenyl-Substituted Methanes. Geminal Interaction between Phenyl and the Electron-Releasing Substituent in Benzylamines and Benzyl Alcohols,
J. Chem. Eng. Data, 1999, 44, 6, 1245-1251, https://doi.org/10.1021/je990118z
. [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]
Wehrli and Kováts, 1959
Wehrli, A.; Kováts, E.,
Gas-chromatographische Charakterisierung ogranischer Verbindungen. Teil 3: Berechnung der Retentionsindices aliphatischer, alicyclischer und aromatischer Verbindungen,
Helv. Chim. Acta, 1959, 7, 7, 2709-2736, https://doi.org/10.1002/hlca.19590420745
. [all data]
Kallio, Jussila, et al., 2006
Kallio, M.; Jussila, M.; Rissanen, T.; Anttila, P.; Hartonen, K.; Reissell, A.; Vreuls, R.; Adahchour, M.; Hyotylainen, T.,
Comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry in the identification of organic compounds in atmospheric aerosols from coniferous forest,
J. Chromatogr. A, 2006, 1125, 2, 234-243, https://doi.org/10.1016/j.chroma.2006.05.050
. [all data]
Xu, van Stee, et al., 2003
Xu, X.; van Stee, L.L.P.; Williams, J.; Beens, J.; Adahchour, M.; Vreuls, R.J.J.; Brinkman, U.A.Th.; Lelieveld, J.,
Comprehensive two-dimensional gas chromatography (GC×GC) measurements of volatile organic compounds in the atmosphere,
Atmos. Chem. Phys., 2003, 3, 3, 665-682, https://doi.org/10.5194/acp-3-665-2003
. [all data]
Gurbuz O., Rouseff J.M., et al., 2006
Gurbuz O.; Rouseff J.M.; Rouseff R.L.,
Comparison of aroma volatiles in commercial Merlot and Cabernet Sauvignon wines using gas chromatography - Olfactometry and gas chromatography - Mass spectrometry,
J. Agric. Food Chem., 2006, 54, 11, 3990-3996, https://doi.org/10.1021/jf053278p
. [all data]
Whitfield, Shea, et al., 1981
Whitfield, F.B.; Shea, S.R.; Gillen, K.J.; Shaw, K.J.,
Volatile components from the roots of Acacia pulchella R.Br. and their effect on Phytophthora cinnamomi rands,
Aust. J. Bot., 1981, 29, 2, 195-208, https://doi.org/10.1071/BT9810195
. [all data]
Xu, Han, et al., 2012
Xu, L.-L.; Han, T.; Wu, J.-Z.; Zhang, Q.-Y.; Zhang, H.; Huang, B.-K.; Rahman, K.,
Comparative research of chemical constituents, antifungal and antitumor properties of ether extracts of Panax ginseng and its endophytic fungus, 2012, retrieved from http://www.thefreelibrary.com/Comparative .... [all data]
Leffingwell and Alford, 2011
Leffingwell, J.; Alford, E.D.,
Volatile constituents of the giant pufball mushroom (Calvatia gigantea),
Leffingwell Rep., 2011, 4, 1-17. [all data]
Radulovic, Blagojevic, et al., 2010
Radulovic, N.; Blagojevic, P.; Palic, R.,
Comparative study of the leaf volatiles of Arctostaphylos uva-ursi (L.) Spreng. and Vaccinium vitis-idaea L. (Ericaceae),
Molecules, 2010, 15, 9, 6168-6185, https://doi.org/10.3390/molecules15096168
. [all data]
Xu, Han, et al., 2009
Xu, L.-L.; Han, T.; Wu, J.-Z.; Zhang, Q.-Y.; Zhang, H.; Huang, B.-K.; Rahman, K.,
Comparative research of chemical constituents, antifungal and antitumor properties of ether extracts of Panax ginseng and its endophytic fungus,
Phytomedicine: Int. J. Phytotherapy Phytopharmacology, 2009, 16, 6-7, 609-616, https://doi.org/10.1016/j.phymed.2009.03.014
. [all data]
Castel, Fernandez, et al., 2006
Castel, C.; Fernandez, X.; Lizzani-Cuvelier, L.; Loiseau, A.-M.; Perichet, C.; Delbecque, C.; Arnaudo, J.-F.,
Volatile constituents of benzoin gums: Siam and Sumatra, part 2. Study of headspace sampling methods,
Flavour Fragr. J., 2006, 21, 1, 59-67, https://doi.org/10.1002/ffj.1502
. [all data]
Dickschat, Martens, et al., 2005
Dickschat, J.S.; Martens, T.; Brinkhoff, T.; Simon, M.; Schulz, S.,
Volatiles released by a Streptomyces species isolated from the North Sea,
Chemistry and Biodiversity, 2005, 2, 7, 837-865, https://doi.org/10.1002/cbdv.200590062
. [all data]
King, Matthews, et al., 1995
King, M.-F.; Matthews, M.A.; Rule, D.C.; Field, R.A.,
Effect of beef packaging method on volatile compounds developed by oven roasting or microwave cooking,
J. Agric. Food Chem., 1995, 43, 3, 773-778, https://doi.org/10.1021/jf00051a039
. [all data]
Soria, Sanz, et al., 2008
Soria, A.C.; Sanz, J.; Martinez-Castro, I.,
SPME followed by GC-MS: a powerful technique for qualitative analysis of honey volatiles,
Eur. Food Res. Technol., 2008, 1-12. [all data]
Umano, Nakahara, et al., 1999
Umano, K.; Nakahara, K.; Shoji, A.; Shibamoto, T.,
Aroma chemicals isolated and identified from leaves of aloe arborescens Mill. Var. natalensis Berger,
J. Agric. Food Chem., 1999, 47, 9, 3702-3705, https://doi.org/10.1021/jf990116i
. [all data]
Kubota, Nakamoto, et al., 1991
Kubota, K.; Nakamoto, A.; Moriguchi, M.; Kobayashi, A.; Ishii, H.,
Formation of pyrrolidino[1,2-e]-4H-2,4-dimethyl-1,3,5-dithiazine in the volatiles of boiled short-necked clam, clam, and corbicula,
J. Agric. Food Chem., 1991, 39, 6, 1127-1130, https://doi.org/10.1021/jf00006a027
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Soria, Martinez-Castro, et al., 2008
Soria, A.C.; Martinez-Castro, I.; Sanz, J.,
Some aspects of dynamic headspace analysis of volatile components in honey,
Foog Res. International, 2008, 41, 8, 838-848, https://doi.org/10.1016/j.foodres.2008.07.010
. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas Chromatography, References
- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°solid Enthalpy of formation of solid 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
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