An explosion of ammonium nitrate was responsible for the worst industrial accident in US history in 1947. Cette explosion est la conséquence d'un incendie qui a ravagé des magasins dans lesquels étaient stockées 15 tonnes de TNT et 150 tonnes de nitrate d'ammonium. Explosives expert claims Beirut explosion that killed 160 was caused by burning military missiles - not ammonium nitrate – because the blast cloud was orange not yellow . Reaction between ammonium nitrate and reactive ground (RG 1) showing a) the hot stage microscope and b) the generation of gas bubbles. Perhaps the closest comparison to Beirut's explosion, in terms of scale, is a blast in Texas City in 1947, which was caused by 2,300 US tons (about 2,087 metric tons) of ammonium nitrate. Une grande explosion dans la poudrerie de la société Explosives Loading Company cause la mort de 116 personnes. The red-orange smoke plume was one of the first clues that ammonium nitrate was involved in the explosion in Beirut. Bands due to surface bound NO species are seen in the region 1750–1800 cm −1. An ammonium nitrate explosion produces massive amounts of nitrogen oxides. On 4 August 2020, an explosion occurred at a warehouse storing ammonium nitrate in Beirut, Lebanon. 5th August 2020. It has been reported by international media, including the BBC and The Guardian, that at least 137 people have died and 5,000 injured. The IR spectra of ammonium nitrate, pyrite and their mixtures are shown in Fig. Kauffman said, in principle, ammonium nitrate should be highly explosive by itself, but it is not. Présenté comme l'origine des explosions à Beyrouth, le nitrate d'ammonium est principalement employé comme engrais «azoté» pour un usage agricole. While these alternatives have helped, it is important to note that unintended impurities in the manufacturing process may reduce its stability or facilitate explosion. 2,750 tons of the chemical that had been stored in a Beirut warehouse blew up, killing dozens of people and injuring many more 21 septembre 2001, Toulouse. Ammonium nitrate: what is it and why did it cause the blast in Beirut? The heat of reaction is utilized for evaporation and 80–83% ammonium nitrate solution is obtained. Sur le site de fabrication, explosion de 75 t de nitrate dans le réacteur et la réserve voisine ; le bilan est de 4 morts et 18 blessés. It also destroyed Texas City in 1947 and the Alfred P. Murrah Federal Building in Oklahoma City in 1995. A devastating explosion of an enormous amount of ammonium nitrate killed more than 200 people and injured at least 6,000 at the port of Beirut on the 4th of August 2020. Car à partir de 200 °C, le nitrate d'ammonium (ou ammonitrate) se décompose et, en général, cela explose. The monster explosion that destroyed a good bit of Beirut was caused by the detonation of more than 2,700 tons of the fertilizer ammonium nitrate – a ghastly amount of one seriously scary chemical. Ammonium nitrate decomposition can be set off if an explosion occurs where it's stored, if there is an intense fire nearby. Risque au-delà de 290 °C. On Aug. 4, a devastating explosion struck the area around a port in Beirut. La terrible explosion qui a frappé Beyrouth a été, selon les autorités libanaises, causée par le stockage de nitrate d'ammonium. Commenting on whether there will likely be remaining health impacts of exposure: Prof Andrea Sella, Professor of Inorganic Chemistry, UCL, said: “I don’t think there is any significant hazard. The compound is just part of our history with explosives. "If you look at the video (of the Beirut explosion), you saw the black smoke, you saw the red smoke, that was an incomplete reaction," she said. Ammonium nitrate is an odourless crystalline substance commonly used as a fertilizer that has been the cause of numerous industrial explosions over the decades. La Russie est de loin le premier pays producteur, avec près de 10 millions de tonnes en 2017, soit 45 % de la production mondiale, selon la FAO. Un stock de 2 750 tonnes de cette substance a explosé, mardi 4 août, dans la capitale libanaise. 3.2.1. Calcium ammonium nitrate (CAN), prepared from ammonium nitrate and calcium carbonate, is used in some cases as an alternative to ammonium nitrate. Le nitrate d'ammonium à l'origine supposée des explosions de Beyrouth mardi est un sel blanc et inodore utilisé comme base de nombreux engrais azotés sous forme de granulés. When it suddenly exploded on August 4th, 2,750 metric tons of the volatile substance had been sitting in port for seven years. Explosions accidentelles ayant impliqué du nitrate d'ammonium 2 avril 1916, explosion de Faversham, Kent (Royaume-Uni. ZOOM - Selon le gouvernement libanais, 2750 tonnes de nitrate d'ammonium seraient à l’origine des explosions qui ont dévasté Beyrouth ce mardi. Le nitrate d’ammonium est pourtant en tant que tel relativement peu explosif. Nitrogen dioxide (NO₂) is a red, bad-smelling gas. expert reaction to Beirut explosion . 13 décembre 1994, Sioux City (États-Unis). Explosions à Beyrouth : qu’est-ce que le nitrate d’ammonium, à l’origine de plusieurs accidents ? Les chimistes l'ont appris le 21 septembre 1921. Le nitrate d’ammonium (NH4NO3) est le fruit de la réaction entre l’ammoniac et l’acide nitrique. IChemE reaction to the chemical explosion in Beirut. If the name sounds familiar it's because the chemical is notorious. Ammonium nitrate may have caused last week’s Beirut explosion, Deutsche Welle reported. Explosion sur un chantier avec du nitrate d’ammonium mélangé à de l’essence et des pastilles d’aluminium. À l'origine des explosions à Beyrouth, le nitrate d'ammonium ou ammonitrate, très présent dans les engrais utilisés dans l'agriculture en France. A large explosion in Beirut, Lebanon, was reportedly caused by a large quantity of ammonium nitrate stored in a warehouse near the port. Aluminum sulfate has also been used as a drying additive for ammonium nitrate. Ammonium nitrate is a chemical compound with the chemical formula NH 4 NO 3.It is a white crystalline solid consisting of ions of ammonium and nitrate.It is highly soluble in water and hygroscopic as a solid, although it does not form hydrates.It is predominantly used in agriculture as a high-nitrogen fertilizer. 5. First, ammonium nitrate solution is prepared by reacting preheated ammonia with nitric acid in a neutralizer. 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