The method was established for purification of diflubenzuron by crystal technique with mixed solvents.

本文论述利用混合溶剂——结晶法除虫脲的析技术。

A new typal insecticide, its generation, physical and chemical properties, insecticidal mechanism, insecticidal characteristic and synthesis of diflubenzuron are introduced.

介型杀虫剂──除虫脲的发现、理化性质、杀虫机理、杀虫特点及合成方法。