Manufacture and Application of Chlorpyrifos+Emamection benzoate 25% EW

We studied on the optimum formulation of chlorpyrifos+emamection benzoate 25%EW, screened out the best emusifier and antifreeze. The composition consist of chlorpyrifos+emamection benzoate 25%, xylene 12%. The proportion of surfactant ML–200, which totally occupied 6% weight of the formulation; ethyleneglycol occupied 5% weight of the formulation. The other component was distilled water. Made by the above formulation, the indexes of the chlorpyrifos+emamection benzoate 25% EW was up to grade. The formulation had been stored at (54±2)℃ for 14 days without oil-and layer-separation. The viscosity of the formulation was low, which makes it easier to pour out and sub-package. The properties and the effect of the product was tested and determined, the result indicated that chlorpyrifos +emamection benzoate 25% EW was excellent effect against rice leaf roller.