C4是一类含有1个苯环和其余4个碳原子的有机化合物。C4苯存在于石油中。[1]汽油中含有约5~8%的C4苯。[2]

参考文献

编辑
  1. ^ Hill, Ronald J.; Lu, Shan-tan; Tang, Yongchun; Henry, Mitchell; Kaplan, Isaac R. C4-benzene and C4-naphthalene thermal maturity indicators for pyrolysates, oils and condensates. The Geochemical Society Special Publications. 2004, 9: 303–319. doi:10.1016/S1873-9881(04)80022-1. 
  2. ^ Kostecki, Paul T.; Calabrese, Edward J. Hydrocarbon Contaminated Soils. CRC Press. 1993: 217 [2018-02-22]. ISBN 9781566700184. (原始内容存档于2018-01-31) (英语).