NANO AQUEOUS FORMULATION COMPRISING CHLORPYRIFOS AND PREPARATION METHOD THEREOF

• Main Authors: GAO, Ruihua, GUO, Chongyou, XING, Gang, BAI, Jie, YANG, Qin
• Format: Patent
• Language: Chinese; English; French
• Published: 15.04.2021
• Subjects: AGRICULTURE; ANIMAL HUSBANDRY; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES; FISHING; FORESTRY; HUMAN NECESSITIES; HUNTING; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS; PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF; TRAPPING

Disclosed is a nano aqueous formulation comprising chlorpyrifos. The nano aqueous formulation is prepared from chlorpyrifos technical material, a surfactant and water as raw materials using a surfactant micellar solubilization technique, without containing any organic solvents, wherein the chlorpyrifos is in a mass percent of 0.5-10% and the surfactant is in a mass percent of 5-20% in the nano aqueous formulation, with the rest being water. The nano aqueous formulation prepared using the surfactant micellar solubilization technique has an excellent stability in comparison to a conventional pesticide formulation, as demonstrated by the maintained stability even after cold storage at 0°C for 7 days and hot storage at 54°C for 14 days respectively, and without chlorpyrifos precipitation, which is conducive to storage and provides a prolonged shelf life. The nano aqueous formulation can be produced at a low cost, has superior fast-acting efficacy and long-lasting efficacy, will not produce adverse effects such as