What defines secondary explosives compared to primary explosives?

Secondary explosives are characterized by their relative stability and the increased energy they produce upon detonation compared to primary explosives. They require a greater degree of energy to initiate, making them harder to trigger under normal conditions. This increased stability means that secondary explosives can be handled and transported with relatively lower risk in comparison to primary explosives, which are typically more sensitive and can be detonated by heat, shock, or friction.

The defining feature of secondary explosives is indeed their greater power and the need for a more significant initiation source, often necessitating the use of a primary explosive to trigger them. This distinction is important in hazardous materials management and transportation, as it directly affects safety procedures and handling protocols.