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

本文论述了利用混——结晶法提纯脲的析技术。

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

介绍了新型杀──脲的发现、理化性质、杀机理、杀特点及成方法。