Benzene is an aromatic hydrocarbon with the molecular formula C6H6. It is a cyclic compound with a planar ring structure and delocalized electrons. Benzene is a common solvent and an important building block in organic chemistry. While not a monomer itself, it forms the basis for many monomers used in polymer synthesis, such as styrene and phenol.

苯是一种芳香烃，分子式为 C6H6。它是一种具有平面环状结构和离域电子的环状化合物。苯是一种常见的溶剂，也是有机化学中的重要组成部分。虽然苯本身不是单体，但它是聚合物合成中使用的许多单体的基础，例如苯乙烯和苯酚。