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Hexafluoroacetone is a chemical compound with the formula CF3-CO-CF3. It comes in the form of a colourless, hygroscopic, nonflammable, highly reactive gas characterized by a musty odour. The most common form of this substance is hexafluoroacetone sesquihydrate (1.5 H2O), which is a gem-diol.
Additional recommended knowledge
Synthesis and reactions
(CF3)2CO is prepared in a two step process from perfluoropropene. In the first step KF catalyzes the reaction of the alkene with elemental sulfur to give the 1,3-dithete [(CF3)2CS]2. This species is then oxidized by iodate to give (CF3)2CO.
Hexafluoroacetone is mostly employed in organic synthesis, but it is also the main chemical intermediate used in the production of hexafluoroisopropanol, as well as polymethyl methacrylates and polyesters for textile coating. Hexafluoroacetone can be employed as a solvent for acetal resins, polyamides and polyglycolide or as a polymer adhesive.
Hexafluoroacetone is a reactive substance, acting primarily as an electrophile. It will react vigorously with water, irreversibly forming a hydrate. Such hydrates are acidic that react with most metals to generate hydrogen. Hexafluoroacetone violently reacts in the presence of alkali. Related to its tendency to hydrate, (CF3)2CO adds ammonia to give (CF3)2C(OH)(NH2) which can be dehydrated with POCl3 to give (CF3)2CNH.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Hexafluoroacetone". A list of authors is available in Wikipedia.|