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Adipic acid
Adipic acid (IUPAC systematic name: hexanedioic acid) is a dicarboxylic acid. It is a white crystalline powder. Due to its long aliphatic chain, it is not very soluble in water. Additional recommended knowledgePreparationHistorically, adipic acid was prepared from various fats using oxidation. Current commercial adipic acid is produced from cyclohexane by two oxidation steps.
(The mixture of cyclohexanol and cyclohexanone produced from cyclohexane is commercially called "KA oil", the abbreviation of "Ketone-Alcohol oil".) Other patented processes include those using phenol as feedstock. For example, phenol can be oxidized to KA oil, which is further processed give adipic acid.[1] Utilizing principles of green chemistry, a new method of synthesis has been developed, which involves oxidizing cyclohexene with hydrogen peroxide via a tungsten catalyst and a phase transfer catalyst to produce adipic acid.[2] The waste product is water. UsesBy far the main use of adipic acid is as monomer for the production of nylon by a polycondensation reaction with hexamethylene diamine forming 6,6-nylon. Other uses include:
References
Categories: Dicarboxylic acids | Monomers |
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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Adipic_acid". A list of authors is available in Wikipedia. |