Why are organic peroxides high risk?

• A. They can decompose exothermically and violently, with potential for fire or detonation.
• B. They are inert at room temperature and pose no hazard.
• C. They only react slowly with metals.
• D. They dissolve in water readily with no heat release.

Answer: (A)

Organic peroxides are highly hazardous because their weak peroxide bond can break and release a lot of energy very quickly. This decomposition is typically exothermic and can proceed violently, producing heat, gases, and reactive radicals. In a confined space or if heat, shock, friction, or contaminants are present, the reaction can run away, leading to a fire or even detonation. They also act as oxidizers, so once decomposition starts, it can fuel combustion rather than just burn calmly. This combination of a high-energy bond, sudden exothermic release, and oxidizing power makes organic peroxides dangerous. They are not simply inert at room temperature, nor do they only react slowly with metals, and they aren’t reliably harmless to dissolve in water without heat release—the hazard mainly comes from rapid, energetic decomposition and potential explosion.