Cyclo-l,3,5-trimethylene-2,4,6-trinitramin

Secondary explosives, which include TNT, cyclo-l,3,5-trimethylene-2,4,6-trinitramine (RDX or cyclonite), High Melting Explosives (HMX), and tetryl, are much more prevalent at military sites than are primary explosives. Since they are formulated to detonate only under specific circumstances, secondary explosives often are used as main charge or boostering explosives. 

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