Patent ID: 8333982

Claim:
An aqueous microemulsion formulation, comprising a) at least one organic insecticide compound having a water solubility of not more than 5 g/l at 298 K and 1013 mbar; b) at least one polar organic solvent selected from the group consisting of 2-heptanone and acetophenone; c) at least one alcohol having from 6 to 8 carbon atoms; d) at least one surfactant selected from anionic surfactants and non-ionic surfactants; e) at least one non-polar organic solvent having a water solubility of not more than 1 g/l at 298 K and 1013 mbar; and f) water, wherein the at least one organic insecticide compound having a water solubility of not more than 5 g/l at 298 K and 1013 mbar is a pyrethroid compound P and wherein the average particle size in microemulsion upon dilution does not exceed 100 nm.