4-Etyltoluen

4-Etyltoluen
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Andre navn
p-Etylmetylbenzen
p-Etyltoluen
Identifikatorer
CAS-nummer622-96-8
PubChem12160
SMILESCCc1ccc(cc1)C
UNII G6JY83VLB5
Kjemiske egenskaper
FormelC9H12
Molar masse120.195 g/mol
UtseendeFargeløs væske
Tetthet861 kg/m3
Kokepunkt162 °C

4-Etyltoluen er en organisk forbindelse med formelen CH3C6H4C2H5. Det er en av tre isomerer av etyltoluen, de to andre isomerer er 3-etyltoluen og 2-etyltoluen. Alle er fargeløse væsker, og alle brukes til produksjon av polystyrener.

Produksjon og bruk

Etyltoluen produseres ved etylering av toluen:

Over typiske syrekatalysatorer gir denne prosessen en blanding av 2-, 3- og 4-isomerene. Ved å bruke en modifisert zeolittkatalysator er alkyleringen formselektiv for 4-isomeren.[1]

4-Etyltoluen utsettes for dehydrogenering for å gi 4-vinyltoluen.[2]

Referanser

  1. ^ Griesbaum, Karl (15. juni 2000). «Hydrocarbons». I Wiley-VCH Verlag GmbH & Co. KGaA. Ullmann's Encyclopedia of Industrial Chemistry (på engelsk). Wiley-VCH Verlag GmbH & Co. KGaA. s. a13_227. ISBN 978-3-527-30673-2. doi:10.1002/14356007.a13_227. Besøkt 9. oktober 2020. 
  2. ^ James, Denis H. (15. oktober 2011). «Styrene». I Wiley-VCH Verlag GmbH & Co. KGaA. Ullmann's Encyclopedia of Industrial Chemistry (på engelsk). Wiley-VCH Verlag GmbH & Co. KGaA. s. a25_329.pub2. ISBN 978-3-527-30673-2. doi:10.1002/14356007.a25_329.pub2. Besøkt 9. oktober 2020. 

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