Any substance or article, including a device, which is designed to function by explosion, or which,
by chemical reaction within itself, is able to function in a similar
manner even if not designed to function by explosion. Included are
substances which have a mass explosion hazard (Division 1.1); a
projection hazard, but not a mass explosion hazard (Division 1.2);
and a fire hazard and either a minor blast hazard or a minor projection
hazard or both, but not a mass explosion hazard (Division 1.3).