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|Section2=〕 | Density=1.77 g/cm3 at 20 °C | MeltingPtC=141.3 | BoilingPtC=180 | BoilingPt_notes = (decomposes above ) | Solubility= }} |Section3= |Section4= |Section5= }} Pentaerythritol tetranitrate (PETN), also known as PENT, PENTA, TEN, corpent, penthrite (or—rarely and primarily in German—as nitropenta), is the nitrate ester of pentaerythritol, and is structurally very similar to nitroglycerin. Penta refers to the five carbon atoms of the neopentane skeleton. PETN is one of the most powerful explosive materials known, with a relative effectiveness factor of 1.66.〔(【引用サイトリンク】title=PETN (Pentaerythritol tetranitrate) )〕 When mixed with a plasticizer, PETN forms a plastic explosive. As a mixture with RDX and other minor additives, it forms another plastic explosive called Semtex. PETN is also used as a vasodilator drug to treat certain heart conditions, such as for management of angina. ==History== Pentaerythritol tetranitrate was first prepared and patented in 1894 by the explosives manufacturer Rheinisch-Westfälische Sprengstoff A.G. of Cologne, Germany.〔See: * Deutsches Reichspatent 81,664 (1894). * Bruno Thieme, ("Process of making nitropentaerythrit," ) U.S. patent no. 541,899 (filed: November 13, 1894 ; issued: July 2, 1895). * Peter O. K. Krehl, ''History of Shock Waves, Explosions and Impact'' ... (Berlin, Germany: Springer-Verlag, 2009), (p. 405 ). * Tadeusz Urbański with Władysław Ornaf and Sylvia Laverton, trans., ''Chemistry and Technology of Explosives'', vol. 2 (Oxford, England: Permagon Press, 1965), (p. 175. ) 〕 The production of PETN started in 1912, when the improved method of production was patented by the German government. PETN was used by the German Military in .〔See: *German Patent 265,025 (1912) *〕 It was also used in the MG FF/M autocannons and many other weapon systems of the Luftwaffe in World War II, specifically in the high explosive "Minengeschoß" shell. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「pentaerythritol tetranitrate」の詳細全文を読む スポンサード リンク
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