Which statement correctly describes 5.2 Type C materials?

• A. Neither detonates nor deflagrates rapidly and cannot undergo thermal explosion.
• B. Can detonate or deflagrate rapidly as packaged for transport.
• C. Detonates only partially or deflagrates slowly.
• D. Detonates rapidly when heated under confinement.

Answer: (A)

5.2 Type C organic peroxides are the most stable among this group. They are not expected to detonate or deflagrate rapidly, and they cannot undergo a thermal explosion, even if heated. This stability is what sets Type C apart from the other subtypes, which are more sensitive to heat, shock, or confinement and can decompose violently under certain conditions. The other statements describe behaviors associated with more reactive types—rapid detonation or deflagration under heat or confinement, or rapid decomposition during packaging—so they don’t apply to Type C. Even with this higher stability, still handle them with proper precautions and keep them away from heat, incompatibles, and sources of ignition.