IntroductionGeneral BackgroundToxicity of Chemicals in the EnvironmentAccidents with ChemicalsWaste and MinimizationConclusionsSummary of Some Important PointsReferencesRecommended ReadingExercisesDoing without Phosgene, Hydrogen Cyanide, and FormaldehydeIntroductionPreparation of IsocyanatesPolycarbonatesSummary and ConclusionsReferencesRecommended ReadingExercisesThe Chlorine ControversyThe ProblemToxicity ofChlorine CompoundsEstrogen MimicsBleaching PaperDisinfecting WaterChlorofluorocarbons and Ozone DepletionChlorinated SolventsSyntheses Where Chlorine is not in the Final ProductSummary.Abstract: IntroductionGeneral BackgroundToxicity of Chemicals in the EnvironmentAccidents with ChemicalsWaste and MinimizationConclusionsSummary of Some Important PointsReferencesRecommended ReadingExercisesDoing without Phosgene, Hydrogen Cyanide, and FormaldehydeIntroductionPreparation of IsocyanatesPolycarbonatesSummary and ConclusionsReferencesRecommended ReadingExercisesThe Chlorine ControversyThe ProblemToxicity of Chlorine CompoundsEstrogen MimicsBleaching PaperDisinfecting WaterChlorofluorocarbons and Ozone DepletionChlorinated SolventsSyntheses Where Chlorine is not in the Final ProductSummary