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Pentaerythritol Tetranitrate |
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pentaerythritol tetranitrate [¦pen·tə·ə′rith·rə‚tȯl ‚te·trə′nī‚trāt]
(organic chemistry) C(CH2ONO2)4A white crystalline compound, melting at 139°C; explodes at 205-215°C; soluble in acetone, insoluble in water; used in medicines and explosives. Also known as penthrite; PETN. Pentaerythritol Tetranitrate (also penthrite), C(CH2ONO2)4, a substance occurring as white crystals that is insoluble in water and that has a melting point of 141°–142° C and a density of 1.74 g/cm3. Pentaerythritol tetranitrate is obtained by the nitration of pentaerythritol using concentrated nitric acid or a mixture of nitric and sulfuric acids. The compound is a powerful explosive and is highly detonable and sensitive to mechanical action. Its detonation wave travels at a speed of 8,300 m/sec at a density of 1.6 g/cm3. The heat of explosion is 5,803 kilojoules/kg (1,385 kilocalories/kg), and the compound ignites at 200° C. Pentaerythritol tetranitrate is used in making detonating fuses; it also serves as a secondary explosive in detonators. It can be mixed with trinitrotoluene to form substances known as pento-lites. In medicine, it is used in vasodilative preparations. REFERENCEOrlova, E. Iu. Khimiia i tekhnologüa brizantnykh vzryvchalykh veshchestv, 2nd ed. Leningrad, 1973.Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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No references found | In the new scheme, the researchers adapted the technology to detect two chemicals typically found in plastic explosives: pentaerythritol tetranitrate (PETN) and hexahydro-l,3,5-triazine (RDX). The New York Times reported in its Friday issue that chemists in the FBI laboratory in Washington had discovered traces of PETN, or pentaerythritol tetranitrate, on a piece of wreckage from the passenger cabin between rows 17 and 27, a finding that provided scientific evidence that an explosive device was detonated inside the passenger cabin. While the new finding provides evidence that the plane was destroyed by an explosive device, a senior official noted that PETN, or pentaerythritol tetranitrate, was an explosive component commonly found in many bombs and surface-to-air missiles, making it impossible, for now, to know for sure which type of explosive device destroyed the Boeing 747, killing all 230 people aboard. |
Pentaerythritol Tetranitrate |
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