High Quality Content by WIKIPEDIA articles! Pentaerythritol tetranitrate (PETN, also known as PENT, PENTA, TEN, corpent, penthrite, or rarely and primarily in German as nitropenta or pentrit) is one of the most powerful high explosives known, with a relative effectiveness factor (R.E. factor) of 1.66. In addition to being used as a plastic explosive, it is also used as a vasodilator drug to treat certain heart conditions. The most common use of PETN is as an explosive with high brisance. It is more difficult to detonate than primary explosives, so dropping or igniting it will typically not cause an explosion (at atmospheric pressure it is difficult to ignite and burns relatively slowly), but is more sensitive to shock and friction than other high explosives such as TNT or tetryl.

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