| abstract |
The present invention relates to the technical field of herbicide crystallization processes, and in particular, to a cypyrafluone dimethylamine salt C crystal form, a preparation method therefor and use thereof. The X-ray powder diffraction pattern of the cypyrafluone dimethylamine salt C crystal form has characteristic peaks at diffraction angles 2θ of 6.7°, 9.1°, 9.7°, 11.0°, 13.7°, 14.1°, 14.6°, 15.3°, 16.0°, 18.4°, 19.1°, 19.4°, 20.6°, 21.1°, 21.7°, 22.5°, 23.2°, 23.8°, 25.4°, 25.9°, 26.5°, 27.9°, 28.3°, 28.8°, 29.9°, 31.2°, 32.1°, 33.0°, 34.5°, 35.2°, 35.6°, 37.0°, 37.6°, 39.1°, 39.5°, 41.2°, 41.6°, 42.6°, and 44.3°, wherein the error range of 2θ is within ±0.2°. The cypyrafluone dimethylamine salt C crystal form of the present invention has good physicochemical stability, high solubility, and high bioactivity, and can be used for the control of weeds. |