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Comparative study of the cationic surfactants and their influence on the alkaline hydrolysis of acetylsalicylic acid

✍ Scribed by Birendra Kumar; Kallol K. Ghosh; P. Rodriquez Dafonte

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
248 KB
Volume
43
Category
Article
ISSN
0538-8066

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✦ Synopsis

Abstract

A kinetic study of the reaction of acetylsalicylic acid (aspirin) with sodium hydroxide has been studied in the presence of some conventional and novel cationic surfactants. The pseudo‐first‐order rate constant increases with the surfactant concentration initially and then decreases. In comparison to conventional cationic surfactants, i.e., cetyltrimethylammonium bromide and cetylpyridinium bromide, novel alkyldiethylethanolammonium bromide (R = C~16~) surfactant accelerated the alkaline hydrolysis significantly. The pseudophase ion‐exchange model has been applied to fit the experimental results. Activation parameters have also been evaluated. © 2010 Wiley Periodicals, Inc. Int J Chem Kinet 43: 1–8, 2011

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