Displaying 1 results of Fipronil Impurities Fipronil is a widely used insecticide that is known for its effectiveness in controlling pests. However, during the manufacturing process, impurities may be formed which can have harmful effects on the environment and human health. These impurities can include toxic compounds such as sulfone and sulfide derivatives of fipronil. It is important for manufacturers to monitor and control the levels of these impurities to ensure the safety and efficacy of the insecticide.