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Nitrocellulose or cellulose nitrate is a cellulose derivative. It is used in cosmetics, exclusively as a film-forming agent in nail polish and care.
Cellulose is present in plants in large quantities. It is nitrated (originally with nitric acid, but today a mixture of sulfuric acid and nitric acid is used to accelerate the transformation) to form an ester, nitrocellulose, which is then treated with alcohol or water and sold as a moist powder. It is prohibited in Bio.
Nitrocellulose in the dry state is a powerful explosive (at least as powerful as TNT). It is particularly implicated in the explosion of hangar 221 of the AZF factory. It was manufactured by the Toulouse National Gunnery during the First World War, and its residues could explain the explosion of 21 September 2001.