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Sympathetic detonation is a detonation caused by a nearby detonation of another explosive.
UN Gap test will provide the results whether an explosive is having probability to undergo a sympathetic detonation. IMDG Code segregation of explosives says “Different types of articles of Division 1.6, compatibility group N, may only be transported together when it is proven that there is no additional risk of sympathetic detonation between the articles. Otherwise they shall be treated as Division 1.1”.
This is applicable to UN 0486, ARTICLES, EXPLOSIVE, EXTREMELY INSENSITIVE (ARTICLES, EEI), Class 1.6N
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