Photochemistry of Pesticides, 10 [1] Photodegradation of O,O-Diethyl-S(3,4-dihydro-4-oxobenzo[d][1,2,3]triazin- 3-yl-methyl)phosphorodithioate (Azinphos-ethyl)

Abstract

Abstract The photodegradation of Azinphos-ethyl (1) in chloroform and methanol solution has been studied. 3,4-Dihydro-3-methyl-4-oxobenzo[d][1,2,3]triazine (3), 3,4-dihydro-4-oxo-benzo[d]- [1,2,3]triazine (5), O,O-diethyl-O(3-methylbenzo[d][1,2,3]triazine-4-yl)p hosph ate (8), N-methylanthranilic acid (11) (in methanol: methyl ester 12), and sulfur have been isolated and characterized as photoproducts. The decay mechanism is discussed.