Benzene, 1-ethyl-2,4,5-trimethyl-
- Formula: C11H16
- Molecular weight: 148.2447
- IUPAC Standard InChI: InChI=1S/C11H16/c1-5-11-7-9(3)8(2)6-10(11)4/h6-7H,5H2,1-4H3
- IUPAC Standard InChIKey: IYFUQKGDILUVJG-UHFFFAOYSA-N
- CAS Registry Number: 17851-27-3
- 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: 1,2,4-Trimethyl,5-Ethylbenzene; Benzene, 1,2,4-trimethyl-5-ethyl; Benzene, 5-ethyl-1,2,4-trimethyl; 1-Ethyl-2,4,5-trimethylbenzene; 5-Ethyl-1,2,4-trimethylbenzene
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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:
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 | 484. | K | N/A | Von Auwers and Ziegler, 1921 | Uncertainty assigned by TRC = 5. K; TRC |
| Tboil | 484. | K | N/A | Von Auwers, 1919 | Uncertainty assigned by TRC = 5. K; TRC |
| Quantity | Value | Units | Method | Reference | Comment |
| Tfus | 259.4 | K | N/A | Skvarchenko, Levina, et al., 1957 | Uncertainty assigned by TRC = 1.5 K; TRC |
| Tfus | 260.15 | K | N/A | Buck, Coles, et al., 1949 | Uncertainty assigned by TRC = 0.5 K; TRC |
| Tfus | 259.57 | K | N/A | Smith and Kiess, 1939 | Uncertainty assigned by TRC = 0.2 K; TRC |
Enthalpy of vaporization
| ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 13.5 | 332. | A | Stephenson and Malanowski, 1987 | Based on data from 317. to 481. K. See also Stull, 1947.; AC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (atm)
T = temperature (K)
View plot Requires a JavaScript / HTML 5 canvas capable browser.
| Temperature (K) | A | B | C | Reference | Comment |
|---|---|---|---|---|---|
| 316.9 to 481.3 | 3.48010 | 1275.902 | -118.101 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
References
Go To: Top, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Von Auwers and Ziegler, 1921
Von Auwers, K.; Ziegler, K.,
Justus Liebigs Ann. Chem., 1921, 425, 217. [all data]
Von Auwers, 1919
Von Auwers, K.,
Connections between constitution and physical properties of hydrocarbons of the benzene series.,
Justus Liebigs Ann. Chem., 1919, 419, 92. [all data]
Skvarchenko, Levina, et al., 1957
Skvarchenko, V.R.; Levina, R.Ya.; Kuz'min, M.G.,
Synthesis of Hydrocarbons LX. Homologs of Ethylbenzene from Adducts of Alkadienes with Methylethylmaleic Anhydride,
Zh. Obshch. Khim., 1957, 27, 1784. [all data]
Buck, Coles, et al., 1949
Buck, F.R.; Coles, K.F.; Kennedy, G.T.; Morton, F.,
Some Nuclear-methylated Styrenes and Related Compounds,
J. Chem. Soc., 1949, 1949, 2377-83. [all data]
Smith and Kiess, 1939
Smith, L.I.; Kiess, M.A.,
Polymethylbenzenes. XXIII. The Preparation and Physical Propeties of 3- and 5-Ethylpseudocumenes and of Ethylmesitylene,
J. Am. Chem. Soc., 1939, 61, 284. [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]
Notes
Go To: Top, Phase change data, 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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