Which U.S. DOT hazard class refers to poison materials and infectious substances?

Class 6 refers specifically to toxic materials and infectious substances. This classification is crucial for the safe handling, transport, and management of materials that could pose a risk to human health or the environment due to their toxicity or potential to cause disease.

Materials categorized under Class 6 include not just traditional poison materials but also biologically hazardous materials, such as pathogens or toxins that can lead to severe health effects. Understanding this classification helps ensure that responders are equipped with the correct protocols and protective measures to handle these dangerous substances safely.

The other classes mentioned do not pertain to toxic and infectious substances: for example, Class 4 deals with flammable solids and substances that are self-reactive, Class 5 covers oxidizers and organic peroxides, and Class 7 refers to radioactive materials. Understanding the distinctions between these hazard classes is essential for ensuring safety and compliance with regulations during transport and emergency response to hazardous materials.