Combatting insects and acarids with certain O-methyl/ethyl-S- propyl/butyl- O-phenyl-thiophosphates and -dithiophosphates

摘要

Thiophosphoric and dithiophosphoric acid esters of the formula ##STR1## wherein R.sub.1 represents methyl or ethyl, R.sub.2 represents n- propyl, isobutyl or sec, butyl, R.sub.3 and R.sub.4 each represents chlorine, bromine, methyl or ethyl, R.sub.5 representsPP - -OCOCH.sub.3, --O--C.sub.3 --C.sub.5 --alkenyl, --O--C.sub.3 --C.sub.5 -- alkinyl, --O--C.sub.1 --C.sub.4 --alkylene-O--C.sub.1 --C.sub.4 --alkyl, - -O--CH.sub.2 --CCl=CH.sub.2, --O--CH.sub.2 --CH=CHCl, ##STR2## --S--C. sub. 3 --C.sub.5 --alkenyl, SCN, --CH.sub.2 --CCl=CH.sub.2, --CH.sub.2 CH=CHCl, --CHO, ##STR3## ##STR4## AND X represents oxygen or sulphur, processes for their manufacture and their use in pest control.