CYPYRAFLUONE TRIETHANOLAMINE SALT B CRYSTAL FORM, PREPARATION METHOD THEREFOR AND USE THEREOF

摘要

The present invention belongs to the technical field of herbicide crystallization processes, and specifically relates to a cypyrafluone triethanolamine salt B crystal form, a preparation method therefor and the use thereof. The X-ray powder diffraction spectrum of the cypyrafluone triethanolamine salt B crystal form has characteristic peaks at diffraction angle 2θ of 7.0º, 9.8º, 11.2º, 14.0º, 14.8º, 15.5º, 16.2º, 18.6º, 19.3º, 20.8º, 21.4º, 21.9º, 22.7º, 23.1º, 23.9º, 25.6º, 26.1º, 26.6º, 27.9º, 28.3º, 29.0º, 30.1º, 31.5º, 32.3º, 33.2º, 34.7º, 35.5º, 37.2º, 37.7º, 39.7º, 41.3º, 41.8º, 42.9º, and 43.8º, with a 2θ error range within ± 0.2º. The cypyrafluone triethanolamine salt B crystal form of the present invention has a good chemical stability, a high solubility and a high biological activity, and can be used for the prevention and removal of weeds.