Octaazacubane

Octaazacubane is the most powerful chemical explosive with an energy density five times that of TNT per unit mass and a density of 2.69 grams per cubic cm. It was first synthesized in 2031 but by the time of the rise of the Anthropomorphic Hivemind and the AFF crusade against them, it is now mass-produced in bio-factories affiliated with the AFF which use heavily-modified ammonium-oxidizing bacteria to convert nitrogen-rich compounds found in the sewage from their fortress-cities into octaazacubane. Octaazacubane is used as fillers for bombs, missile warheads, and grenades by itself but is also used for the shaped charges of low-yield (i.e. kiloton-level) zero-fallout hydrogen bombs. In addition, it was discovered in 2033 that if it is mixed with an ultraporous silica or activated carbon compound so that it deflagrates rather than detonates, it becomes a suitable fuel for bolter shells. Ever since then, bolters became standard issue weapons for Crusader Heavy Weapons Specialists, Exterminators, and Adam Guard who prefer them to standard ETC weapons for their high stopping power-to-recoil ratio.