A self-reactive substance that detonates partially but does not deflagrate rapidly and shows no violent effects under heated confinement; does not detonate or deflagrate and shows medium effects when under heated confinement is classified as which Type?

• A. Type B Self-Reactive
• B. Type C Self-Reactive
• C. Type D Self-Reactive
• D. Self-reactive substance

Answer: (C)

Self-reactive substances are categorized by how they behave when heated, with four types representing increasing potential for violent reaction. The scenario describes only a limited energetic response: partial detonation without rapid deflagration and no violent effects under heated confinement, and under heated confinement no detonation or deflagration with medium effects. This pattern indicates the lowest level of reactivity among self-reactives, i.e., Type D Self-Reactive. The more reactive types would show stronger, more violent responses under heat, so those don’t fit this description.