Which hazard class identifies materials that pose a health risk and can cause serious injury or death?

The hazard class that identifies materials posing a health risk and the potential to cause serious injury or death is the class for toxic substances. Toxic materials encompass a wide range of chemicals that can be harmful to human health, either through inhalation, skin contact, or ingestion. These substances can lead to acute or chronic health effects, and in some cases, exposure can be fatal.

Understanding the significance of labeling a material as toxic is critical for emergency responders, as it informs them of the necessary precautions and response strategies to mitigate health risks during a hazardous materials incident. Effective identification and management of toxic hazards are essential for ensuring the safety of both responders and the surrounding community.

Other hazard classes such as corrosive, flammable, and explosive address different safety concerns. Corrosive materials can damage living tissue and may pose dangers through chemical reactions, while flammable materials are primarily a fire hazard. Explosive substances pose risks of detonation and blast but do not specifically indicate health risks related to toxicity in the same manner that toxic substances do. Therefore, the identification of toxic materials is crucial for addressing health-related hazards directly.