Type B Organic Peroxides are defined as which statement?

• A. any organic peroxide that detonates partially but does not deflagrate rapidly
• B. any organic peroxide that possesses explosive properties that, when packaged, cannot detonate or deflagrate rapidly or undergo a thermal explosion
• C. any organic peroxide that detonates rapidly under heated confinement
• D. any organic peroxide that has no explosive properties

Answer: (B)

Type B organic peroxides are those that have explosive properties, but when they are properly packaged they do not detonate or deflagrate rapidly and they do not undergo a thermal explosion. This means there is still a potential for explosive behavior, but packaging and handling controls keep the rapid violent reaction at bay under normal conditions. Understanding this distinction helps explain why these materials require specific packaging, segregation, and temperature controls to prevent a dangerous release or reaction during transport. The other statements describe scenarios that imply more immediate detonation under heat and confinement or imply no explosive hazard at all, which do not fit how Type B materials behave in practice.