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The C₄-benzenes are a class of organic aromatic compounds which contain a benzene ring and four other carbon atoms. There are three tetramethylbenzenes, six dimethylethylbenzenes, three diethylbenzenes, three isopropylmethylbenzenes, three n-propylmethylbenzenes and four butylbenzenes. The saturated compounds have formula C₁₀H₁₄ and molecular weight 134.22 g/mol. C₄-benzenes are found in petroleum. Petrol (gasoline) can contain 5-8% C₄-benzenes.

• 1,2,3,4-Tetramethylbenzene or Prehnitene
• 1,3,4,5-Tetramethylbenzene or Isodurene
• 1,2,4,5-Tetramethylbenzene or Durene
• 1,2-Diethylbenzene
• 1,3-Diethylbenzene
• 1,4-Diethylbenzene
• o-Cymene
• m-Cymene
• p-Cymene
• n-Butylbenzene
• Isobutylbenzene
• sec-Butylbenzene
• tert-Butylbenzene
• Divinylbenzene

Cymenes

• o-Cymene
• m-Cymene
• p-Cymene

Tetramethylbenzenes

• prehnitene
• isodurene
• durene

Other

Saturated

• 1,2,3-Ethyldimethylbenzene
• 1,2,4-Ethyldimethylbenzene
• 1,2,5-Ethyldimethylbenzene
• 1,2,6-Ethyldimethylbenzene
• 1,3,4-Ethyldimethylbenzene
• 1,2,5-Ethyldimethylbenzene
• ortho-diethylbenzene
• meta-diethylbenzene
• para-diethylbenzene
• 1,2-Propylmethylbenzene
• 1,3-Propylmethylbenzene
• 1,4-Propylmethylbenzene
• n-Butylbenzene
• sec-Butylbenzene
• tert-Butylbenzene
• Isobutylbenzene

Unsaturated

• Divinylbenzene

References

1. Hill, Ronald J.; Lu, Shan-tan; Tang, Yongchun; Henry, Mitchell; Kaplan, Isaac R. (2004). "C4-benzene and C4-naphthalene thermal maturity indicators for pyrolysates, oils and condensates". The Geochemical Society Special Publications. 9: 303–319. doi:10.1016/S1873-9881(04)80022-1. ISBN 9780444516473.
2. Kostecki, Paul T.; Calabrese, Edward J. (1993). Hydrocarbon Contaminated Soils. CRC Press. p. 217. ISBN 9781566700184.

• Set index articles
• Alkylbenzenes
• C4-Benzenes