| abstract |
Abstract of the Disclosure New thiophosphoric and dithiophosphoric acid esters of the formula (I) wherein R1 represents methyl or ethyl, R2 represents alkyl with 3 to 5 carbon atoms, R3 represents alkyl with 1 to 3 carbon atoms, allyl, alkinyl with 3 to 6 carbon atoms, benzyl, .alpha.-methyl-benzyl, methoxyethyl, methoxy-ethoxyethyl or 1-methyl-2-methoxy-ethyl, and X represents oxygen or sulphur, and their use as insecticides and acaricides are disclosed. |