Pesticidal organophosphorus compsns - stabilized by 2- (pyridyl or phenyl)vinyl-imidazolines and-tetrahydropyrimidines

摘要

Pesticidal compsns. contg. as active component, a cpd. of formula: (where R is an org. gp. of 1-4C; Z is O or S; X, X' are halogen esp. Cl, Br; stabilized by 0.1-10% of a cpd. of formula where n is 2 or 3; X is NH or NR where R is alkyl; Ar is pyridyl or phenyl opt. substd. by one or two alkyl, halogen, OH, -OMe, -OEt or NO2 gps. and =1 of the stabilizers described in the parent patent. The stabilized compsns. are insecticidal and anthelmintic, and pref. contain dichlorvos as the active component.