The Research Of Cyhalothrin Microemulsion’s Recipe With Naphtheniclight Oil As The Solvent

The water-based pesticide’s development required to reduce the production cost and the pollution of the environment. And the pesticide’s microemulsion complied well with this requirement. In this study, the naphthenic light oil was used as new solvents to replace the traditional solvent to fulfill the goal.The naphthenic light oil was poor in solubility, but this property can be effectively improved by adding proper butyl alcohol, isopropanol and ethanol. Based on these solubilizers, naphthenic light oil A and B were used in the research of cyhalothrin pesticide microemulsion respectively with the method of ternary phase diagram and orthogonal analytic, and high efficient cyhalothrin microemulsion were obtained successfully. The test of particle size in all our formulas was up to the specifications, which was required between10to100nm. The results of the temperature range of transparent and the frozen and heat storage were qualifed the requirement of national standardsDuring the investigation, the microemulsion performance, raw material prices and corresponding economic efficiency were all taken into consideration. The most effective formula in the naphthenic light oil A and B were cyhalothrin3.2%, lightA3.2%, ethanol3.2%,602#7.5%,500#7.5%and water75.4%; cyhalothrin2.8%, light B2.8%, ethanol2.8%,602#7%,500#7%, and water77.6%separately.To sum up, it is effectivly feasible to use the naphthenic light oil as new solvents in pesticide microemulsion.