Self-reactive substances, belonging to Class 4.1 of the IMDG Code, pose significant hazards due to their ability to undergo exothermic decomposition, meaning they can generate heat, pressure, and flammable gases without the presence of air. This decomposition can be triggered by heat, friction, impact, or contamination, potentially leading to a fire or explosion. Some self-reactive substances are also desensitized explosives, meaning they have explosive properties but are transported under Class 4.1 because they meet specific criteria for desensitization. The primary hazards associated with self-reactive subst....
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