Dipterex white crystal, with aldehyde odor. Dipterex soluble in most organic solvents but insoluble in aliphatic hydrocarbons and petroleum, hexane, dichloromethane, isopropyl alcohol, toluene. Dipterex easy hydrolysis and dehydrochlorination reaction, heat, pH> 6 split into fast, slow photolysis. Was quickly transformed into dichlorvos base, 22 ℃ hydrolysis, the half-life shortened with the increase of pH value. Dipterex mainly used as pesticides.