A colorless crystalline compound, C4H10N2, used as a hardener for epoxy resins, an antihistamine, and an anthelmintic.

• 哌嗪，对二氮已环一种无色晶体化合物，c4h10n2，用作环氧树脂的硬化物、抗组（织）胺剂和驱虫剂