IsocyanatesCyanatesPolyurethanesToluene 2,4-DiisocyanatePaintRhodiumAir Pollutants, OccupationalButylaminesTear GasesIndolizidinesOccupational ExposureAutomobilesInhalation ExposureCoated Materials, BiocompatibleMustard CompoundsEnvironmental MonitoringOccupational DiseasesAlveolitis, Extrinsic AllergicAlkynesChemical IndustryAerosolsCyclization