苝（读音bèi，Unicode代码82DD），分子式：C₂₀H₁₂，分子量252.32。

外观为无色至黄色结晶。熔点273～274℃，密度1.35g/cm。易溶于氯仿、二硫化碳，溶于苯，微溶于乙醇、乙醚、丙酮，不溶于水。

吸入或接触皮肤有毒，对机体有不可逆损伤。

Perylene or perilene is a polycyclic aromatic hydrocarbon with the chemical formula C₂₀H₁₂, occurring as a brown solid. It or its derivatives may be carcinogenic, and it is considered to be a hazardous pollutant. In cell membrane cytochemistry, perylene is used as a fluorescent lipid probe. It is the parent compound of a class of rylene dyes.