Uses of Alkyl Halides" Solvents-degreasers and dry cleaning fluid Reagents for synthesis of other compounds Anesthetic:Halothane is CFCHCIBr CHCla used originally (toxic and carcinogenic) 麻醉剂 >In 1847,the Edinburgh obstetrician James Young Simpson first used chloroform for general anesthesia during childbirth Freons,chlorofluorocarbons or CFC's Freon 12,CF2Cl2,now replaced with Freon 22, CF,CHCI,not as harmful to ozone layer. Pesticides-DDT banned in U.S