FIELD: chemistry.
SUBSTANCE: method of purifying mesotrione involves preparing a solution of a mesotrione sample in a hydrogen-containing solvent, bringing pH of the solution to 9.5 or higher and crystallisation of mesotrione from the solution.
EFFECT: reduction of content of impurities in the mesotrione sample to an acceptable level.
8 cl, 6 tbl, 6 ex
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