The invention relates to novel N-[3-halo-4-(hexafluoropropoxy)-5-trifluoromethyl]phenyl-N'-benzoylureas of the formula ##STR1## wherein R.sub.1 is hydrogen or halogen and R.sub.2 and R.sub.3 are halogen, to a process and intermediate for the preparation of these compounds, and to compositions containing them for use in pest control, in particular for controlling insects and representatives of the order Acarina that attack plants and animals. The novel compounds exhibit in particular larvicidal activity.
本发明涉及一种新型N-[3-卤代-4-(六
氟丙氧基)-5-三
氟甲基]苯基-N'-苯甲酰
脲,其
化学式为##STR1##其中R.sub.1为氢或卤素,R.sub.2和R.sub.3为卤素,以及制备这些化合物的过程和中间体,以及含有它们的组合物,用于害虫控制,特别是用于控制攻击植物和动物的昆虫和螨类。这些新化合物表现出特别的幼虫杀虫活性。