Uses of Alkyl Halides Industrial and household cleaners. ·Anesthetics: CHCla used originally as general anesthetic but it is toxic and carcinogenic. CFaCHCIBr is a mixed halide sold as HalothaneR Freons are used as refrigerants and foaming agents. 。·Freons can harm the ozone layer so they have been replaced by low-boiling hydrocarbons or carbon dioxide. Pesticides such as DDT are extremely toxic to insects but not as toxic to mammals. Haloalkanes can not be destroyed by bacteria so they accumulate in the soil to a level which can be toxic to mammals,especially,humans. Chapter6 11Chapter 6 11 Uses of Alkyl Halides • Industrial and household cleaners. • Anesthetics: • CHCl3 used originally as general anesthetic but it is toxic and carcinogenic. • CF3CHClBr is a mixed halide sold as Halothane® • Freons are used as refrigerants and foaming agents. • Freons can harm the ozone layer so they have been replaced by low-boiling hydrocarbons or carbon dioxide. • Pesticides such as DDT are extremely toxic to insects but not as toxic to mammals. • Haloalkanes can not be destroyed by bacteria so they accumulate in the soil to a level which can be toxic to mammals, especially, humans