1. The original drug is yellow odorless crystal, the active ingredient content is 98%, and the melting point is 140℃. 2. The vapor pressure is practically zero at 20°C; insoluble in water, soluble in acetone, ethanol and ethyl acetate. 3. Stability is not affected by temperature and is unstable under acidic conditions. 4. The mother liquor is a red clear oily body, the active ingredient content is 0.25%, the density is 0.84～0.88 (20℃), the dryness is 25～35 centipoise (20℃), the flash point is 160℃ (closed type), at -10℃ Storage conditions for several months without precipitation. 5. Insoluble in water, soluble in hydrocarbon solvents. The mother liquor is made to make the active ingredients evenly dispersed in the bait.