Class B Explosives

A class B explosive is one that functions by rapid combustion rather than detonation. This class includes:

liquid or solid propellant explosives
some explosive devices such as special fireworks
some pyrotechnic signal devices
some smokeless powders

Class B explosives are not likely to explode because of friction or impact, although ignition because of friction is possible. Care must be taken in handling broken or damaged packages. Every precaution must be taken to keep Class B explosives away from flames or sparks, since many of these materials will burn rapidly, approaching explosive violence when ignited. In the event of a fire near explosives, every effort must be made to isolate the explosives from the flames. Because of the extreme likelihood of detonation of burning explosives, efforts to extinguish burning explosives is not recommended. Application of water to a fire involving explosives may precipitate an explosion. If a fire results, care must be taken to avoid inhalation of the fumes since the products of combustion of some propellants are poisonous.

Created and maintained by Nancy Magnussen
last revised 2 Aug 1997
nancy@isc.tamu.edu