Names | |
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Preferred IUPAC name
1-Ethyl-4-methylbenzene | |
Other names
p-Ethylmethylbenzene, p-Ethyltoluene
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Identifiers | |
3D model (
JSmol)
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ChemSpider | |
ECHA InfoCard | 100.009.784 |
PubChem
CID
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UNII | |
CompTox Dashboard (
EPA)
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Properties | |
C9H12 | |
Molar mass | 120.195 g·mol−1 |
Appearance | colorless liquid |
Density | 0.861 g/cm3 |
Boiling point | 162 °C (324 °F; 435 K) |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
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4-Ethyltoluene is an organic compound with the formula CH3C6H4C2H5. It is one of three isomers of ethyltoluene, the other two isomers being 3-ethyltoluene and 2-ethyltoluene. All are colorless liquids and all are used for the production of specialty polystyrenes.
Ethyltoluene is produced by ethylation of toluene:
Over typical acid catalysts, this process gives a mixture of the 2-, 3-, and 4- isomers. Using a modified zeolite catalyst, the alkylation is shape-selective for the 4- isomer. [1]
4-Ethyltoluene is subjected dehydrogenation to give 4-vinyltoluene. [2]