Abstract
AbstractThe condensation reaction of phenol with acetone in an acidic medium to produce bisphenol A has been studied with and without the use of promoters. The promoters used were thioglycollic acid, ethyl mercaptan, butyl mercaptan and hexyl mercaptan. The kinetic study of the reaction shows a first order dependence of the reaction rate individually on phenol and on acetone. The mercaptans greatly enhance the reaction rate whereas thioglycollic acid appears to be only a moderate promoter. The rate‐controlling step of the reaction has been found to be the formation of the intermediate carbinol, 2‐(4‐hydroxyphenyl)‐propan‐2‐ol.
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