PROCESS FOR PRODUCTION OF PURIFIED O-(2,6-DICHLORO-4-METHYL- PHENYL) O,O-DIMETHYL PHOSPHOROTHIOATE

摘要

A process for production of purified O-(2,6-dichloro-4 -methylphenyl) O,O-dimethyl phosphorothioate, which comprises the first step of bringing crude O-(2,6-dichloro-4-methyl- phenyl) O,O-dimethyl phosphorothioate into contact with an acid in the presence of a solvent, and the second step of recovering purified O-(2,6-dichloro-4-methylphenyl) O,O-dimethyl phosphorothioate from the mixture obtained in the first step.