The Primary Evaluation of Three Organo-Phosphorus Compounds for Possible Use in the Control of Livestock Insects

Abstract

Three organophosphorus compounds synthesized by Allied Chemical and Dye Corporation, General Chemical 3582 (l-(2,5-dichlorophenyl)-2,2-dichlorovinyl diethyl phosphate), 3583 (2-chloro-1-(2,5-dichlorophenyl) vinyl diethyl phosphate), and 4072 (2-chIoro-1-(2,-4-dichlorophenyl) vinyl diethyl phosphate), were found to be toxic to screw -worms (Callitroga hominivorax and stable flies (Stomoxys caicitrans(L.) in screening tests conducted at Kerrville, Texas. In a screening test to determine their effectiveness as animal systemic insecticides, General Chemical 4072 was slightly active but the other two were not.