Hazardous chemicals are substances, mixtures and articles that can pose a significant risk to health and safety if not managed correctly. Hazardous chemicals may have health hazards, physical hazards or both.
A hazardous chemicals register is a list of hazardous chemicals at a workplace. A manifest is a written summary of hazardous chemicals with physical and acute toxicity hazards that are used, handled or stored at a workplace. Placards provide warnings about the stored hazardous chemicals and contain specific information for emergency service personnel.