Which statement correctly describes 5.2 Type A materials?

Which statement correctly describes 5.2 Type A materials?

• A. Detonates only partially or deflagrates slowly, with medium to no effect when heated under confinement.
• B. Neither detonates nor deflagrates rapidly, but that can undergo a thermal explosion.
• C. Can detonate or deflagrate rapidly as packaged for transport.
• D. Neither detonates nor deflagrates rapidly and cannot undergo thermal explosion.

Answer: (C)

Type A organic peroxides are extremely unstable and pose a severe explosive risk. They can detonate or deflagrate rapidly even while still in their original packaging, meaning the packaging does not prevent a violent reaction during transport. That immediacy of danger—rapid explosive behavior in the packaged state—is what this description captures. Other scenarios describe materials that only react rapidly under heat, confinement, or other triggering conditions, which does not apply to Type A.

Type A organic peroxides are extremely unstable and pose a severe explosive risk. They can detonate or deflagrate rapidly even while still in their original packaging, meaning the packaging does not prevent a violent reaction during transport. That immediacy of danger—rapid explosive behavior in the packaged state—is what this description captures. Other scenarios describe materials that only react rapidly under heat, confinement, or other triggering conditions, which does not apply to Type A.