What is the primary purpose of labels on chemical containers?

The primary purpose of labels on chemical containers is to provide essential information about the hazards and safe handling of the chemical. This includes listing critical details such as the chemical's identity, associated hazards such as toxicity or flammability, proper handling precautions, and first aid measures in case of exposure. This information is vital for ensuring the safety of anyone who comes into contact with the substance, including workers, emergency responders, and the general public.

While other options may contain elements that are relevant, such as manufacturer details or ensuring that a product is sold sustainably, they do not encapsulate the central intent of chemical labeling. The labeling system is designed primarily to prevent accidents and promote safe use, which is crucial in industrial, laboratory, and household environments. Thus, the focus on hazard communication through labels underscores their importance in safety protocols and regulations, such as those mandated by OSHA (Occupational Safety and Health Administration).