Which statement correctly describes 5.2 Type B materials?

Which statement correctly describes 5.2 Type B materials?

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

Answer: (D)

Type B organic peroxides do not detonate or deflagrate rapidly when packaged for transport, but they can undergo a thermal explosion if subjected to sufficient heat or confinement. The key hazard here is that decomposition of these materials can accelerate with temperature, trapping heat and gases in a confined space until an explosion occurs. That explains why the correct description is that they aren’t fast in terms of detonation or rapid burning, yet still carry a potential for a thermal explosion under adverse conditions. The other descriptions either imply rapid detonation/deflagration under normal conditions or deny any explosive response at all, which doesn’t match how Type B organic peroxides behave.

Type B organic peroxides do not detonate or deflagrate rapidly when packaged for transport, but they can undergo a thermal explosion if subjected to sufficient heat or confinement. The key hazard here is that decomposition of these materials can accelerate with temperature, trapping heat and gases in a confined space until an explosion occurs. That explains why the correct description is that they aren’t fast in terms of detonation or rapid burning, yet still carry a potential for a thermal explosion under adverse conditions.

The other descriptions either imply rapid detonation/deflagration under normal conditions or deny any explosive response at all, which doesn’t match how Type B organic peroxides behave.