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[mass noun] A crystalline fatty acid obtained from natural fats and used especially in the manufacture of nylon.
- ‘When adipic acid is manufactured from petroleum, huge amounts of ozone depleting nitrous oxide, N 2 O, are produced.’
- ‘The last step of adipic acid synthesis involves nitric acid oxidation, resulting in the formation of nitrous oxide as a byproduct.’
- ‘For example, polyesters are created by the reaction of a dihydric alcohol, such as ethylene glycol, which contains two hydroxyl groups and a diacid, like adipic acid, containing two carboxyl groups.’
- ‘Nylon 66 is a polyamide based on hexamethylene diamine and adipic acid.’
- ‘W. H. Carothers of E. I. DuPont de Nemours first produced nylon in 1931 from hexamethylenediamine and adipic acid, a six-carbon amine and a six-carbon acid.’
Mid 19th century: from Latin adeps, adip- fat (because the acid was first prepared by oxidizing fats) + -ic.
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