دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n pi: hydrocarbons derived from or containing a benzene ring. Many have an odour. Singlering aromatic hydrocarbons are the benzene series (benzene, ethylbenzenes, and toluene). Aromatic hydrocarbons also include naphthalene and anthracene. Compare aliphatic hydrocarbons.

n: the structural arrangement of atoms believed to exist in benzene.

n: (PCB) a family of highly toxic chemical cornpounds consisting of two benzene rings in which chlorine takes the place of two or rnore hydrogen at- orns;known to cause skin diseases and sus- pected of causing birth defects and cancer.