| abstract |
Disclosed are a cypyrafluone dimethylamine salt D crystal form, a preparation method therefor and the use thereof. The X-ray powder diffraction spectrum of the cypyrafluone dimethylamine salt D crystal form has characteristic peaks at diffraction angle 2θ of 6.5º, 8.7º, 9.2º, 10.3º, 12.6º, 13.1º, 14.7º, 15.4º, 16.4º, 17.0º, 18.3º, 18.6º, 19.9º, 20.4º, 21.2º, 22.3º, 22.8º, 23.2º, 24.9º, 25.4º, 26.1º, 27.0º, 28.5º, 29.5º, 30.6º, 31.8º, 32.7º, 33.2º, 34.6º, 35.0º, 36.4º, 37.3º, 38.3º, and 41.0º, with a 2θ error range within ± 0.2º. The cypyrafluone dimethylamine salt D crystal form has a good physicochemical stability, a high solubility and a high biological activity, and can be used for the prevention and removal of weeds. |