Which class includes Oxidizers and Organic Peroxides?

Which class includes Oxidizers and Organic Peroxides?

• A. Class 4
• B. Class 6
• C. Class 7
• D. Class 5

Answer: (D)

Oxidizers and organic peroxides are grouped together in Class 5 because their hazards revolve around oxidation. Oxidizers release oxygen, which can dramatically accelerate or sustain a fire, making handling and separation critical. Organic peroxides are reactive and can decompose violently, often with heat and gas release, and many also act as oxidizers themselves. This combination of promoting combustion and potential for rapid, energetic decomposition is why they sit in Class 5. For context, Class 4 covers flammable solids, Class 6 covers toxic and infectious substances, and Class 7 covers radioactive materials. Recognizing that oxidizers and organic peroxides belong to Class 5 helps with choosing proper labeling, packaging, segregation, and response actions during transport.

Oxidizers and organic peroxides are grouped together in Class 5 because their hazards revolve around oxidation. Oxidizers release oxygen, which can dramatically accelerate or sustain a fire, making handling and separation critical. Organic peroxides are reactive and can decompose violently, often with heat and gas release, and many also act as oxidizers themselves. This combination of promoting combustion and potential for rapid, energetic decomposition is why they sit in Class 5.

For context, Class 4 covers flammable solids, Class 6 covers toxic and infectious substances, and Class 7 covers radioactive materials. Recognizing that oxidizers and organic peroxides belong to Class 5 helps with choosing proper labeling, packaging, segregation, and response actions during transport.