| abstract |
FIELD: chemistry. n SUBSTANCE: invention relates to a crystalline modification of 2-({2-chloro-4-(methylsulphonyl)-3-[(2,2,2-trifluoroethoxy)methyl]phenyl}carbonyl)-cyclohexane-1,3-dione (tembotrione) in an orthorhombic system, the orthorhombic system being characterised by spatial group Pna2 1 ; the invention also relates to a herbicidal agent containing said modification as an active substance, as well as use of said modification or disclosed herbicidal agent for weed control. n EFFECT: improved formula. n 8 cl, 1 ex, 7 tbl, 6 dwg |