FIELD: chemistry.
SUBSTANCE: present invention relates to a crystalline polymorph of a compound of formula I, which is characterized by a powder diffraction X-ray image containing one 2θ angle value of 13.7±0.2 and at least three 2θ angle values selected from a group consisting of 7,7±0,2, 12,6±0,2, 13,9±0,2, 15,3±0,2, 16,0±0,2, 17,4±0,2, 23,1±0,2 and 23.8±0.2. The invention relates to an insecticidal composition containing an effective amount of the polymorph of the invention and at least one carrier or diluent acceptable from an agricultural point of view. The invention also refers to a method for preventing or controlling insect infection on plants or seed material, including treating the plant or seed material with an insecticide-effective amount of the insecticidal composition of the invention.
EFFECT: technical result is a stable polymorph form of the compound of formula I.
5 cl, 4 tbl, 6 dwg
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