Organic phosphoric esters having the formula (I),
wherein R¹, R² and R³ are independently lower (C₁-C₂) alkyl, can be stabilized by being mixed with a Michael's acceptor, hindered amine stabilizer or epoxy compound due to the effective prevention of thiono-thiolo isomerization reaction. Further, there is provided an excellent soil pest controlling agent containing, as an active ingredient, the organic phosphoric ester stabilized by this method.
具有式 (I) 的有机
磷酸酯、
其中 R¹、R² 和 R³ 独立地为低级(C₁-C₂)烷基,由于可有效防止
硫代
硫代异构化反应,因此可通过与迈克尔受体、受阻胺稳定剂或环氧化合物混合来稳定该有机
磷酸酯。此外,还提供了一种优良的土壤害虫防治剂,其活性成分中含有通过该方法稳定的有机
磷酸酯。