4-Ethyltoluene
Names | |
---|---|
Preferred IUPAC name 1-Ethyl-4-methylbenzene | |
Other names p-Ethylmethylbenzene, p-Ethyltoluene | |
Identifiers | |
CAS Number |
|
3D model (JSmol) |
|
ChemSpider |
|
ECHA InfoCard | 100.009.784 |
PubChem CID |
|
UNII |
|
CompTox Dashboard (EPA) |
|
InChI
| |
| |
Properties | |
Chemical formula | 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). Infobox references |
Chemical compound
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.
Production and use
Ethyltoluene is produced by ethylation of toluene:
- CH3C6H5 + C2H4 → CH3C6H4C2H5
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]
References
- ^ Karl Griesbaum, Arno Behr, Dieter Biedenkapp, Heinz-Werner Voges, Dorothea Garbe, Christian Paetz, Gerd Collin, Dieter Mayer, Hartmut Höke "Hydrocarbons" in Ullmann's Encyclopedia of Industrial Chemistry 2002 Wiley-VCH, Weinheim. doi:10.1002/14356007.a13_227
- ^ Denis H. James; William M. Castor (2007), "Styrene", Ullmann's Encyclopedia of Industrial Chemistry (7th ed.), Wiley, p. 1, doi:10.1002/14356007.a25_329.pub2
- v
- t
- e
aliphatic
hydrocarbons
Alkanes CnH2n + 2 |
| ||||
---|---|---|---|---|---|
Cycloalkanes | |||||
Alkylcycloalkanes |
| ||||
Bicycloalkanes |
| ||||
Polycycloalkanes |
| ||||
Other |
|
aliphatic
hydrocarbons
Alkenes CnH2n |
| ||||
---|---|---|---|---|---|
Alkynes CnH2n − 2 |
| ||||
Cycloalkenes | |||||
Alkylcycloalkenes |
| ||||
Bicycloalkenes | |||||
Cycloalkynes |
| ||||
Dienes |
| ||||
Other |
|
hydrocarbons
PAHs |
| ||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Alkylbenzenes |
| ||||||||||||||||||||||
Vinylbenzenes | |||||||||||||||||||||||
Other |
|