Hazmat division 5.2 hazard is associated with which material type?

• A. Oxidizers
• B. Organic Peroxides meaning any organic compound containing oxygen
• C. Flammable Liquids
• D. Radioactive Substances

Answer: (B)

Division 5.2 covers Organic Peroxides. These are organic compounds that contain the peroxide linkage (an O–O bond) in their structure. That O–O bond makes organic peroxides highly reactive and capable of rapid, sometimes self-accelerating decomposition, which can release heat and oxygen and potentially cause fire or explosion, especially when heated, shocked, or contaminated. This is why they’re classified separately from other hazards: oxidizers (which provide oxygen but don’t have the peroxide bond) fall under Division 5.1, flammable liquids are Class 3, and radioactive substances are Class 7. So the material type for HazMat division 5.2 is organic peroxides—the peroxide-containing organic compounds.