Phlegmatized explosive


A phlegmatized explosive is an explosive that has had an agent added to stabilize or desensitize it. Sometimes this is desirable either to improve the handling properties of an explosive or to reduce its sensitivity, brisance or detonation velocity. TNT explosive can itself be used to phlegmatize more sensitive explosives such as RDX, HMX or PETN. Other typical phlegmatizing agents include paraffin wax, paper or even water. Such agents are nearly always flammable themselves or will at least boil off easily. Typically, a small amount of phlegmatizing agent is used e.g. Composition B, which has 1% paraffin wax added, or the Russian RGO hand grenade which contains 90 grams of "A-IX-1" explosive, comprising 96% RDX and 4% paraffin wax by weight. Another example of use is the VS-50 antipersonnel mine, which contains an explosive filling of 43 grams of RDX, again phlegmatized by combining it with 10% paraffin wax by weight.
Explosive compounds may exist in material states that limit their application. For instance, nitroglycerin is normally an oily liquid. Phlegmatization of nitroglycerin allows it to be formed as a solid, commonly known as dynamite. It also allows the liquid, which is very sensitive to shock, to be handled more vigorously.