Self-reactive substances that possess explosive properties that, when packaged, cannot detonate or deflagrate rapidly or undergo a thermal explosion are Type?

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

Answer: (C)

Self-reactive substances are categorized by how likely they are to explode or decompose violently when heated, shocked, or confined. The description given—explosive properties present, but when packaged they cannot detonate or deflagrate rapidly or undergo a thermal explosion—fits the behavior defined for Type C self-reactives. These substances pose explosive hazards but are not expected to detonate or undergo a rapid thermal event when properly packaged, though they may still react violently under other conditions. Types A and B describe substances with a higher propensity for rapid detonation or violent decomposition, while Type D covers different, typically even less severe or differently behaving self-reactives.