Determination of promethazine hydrochloride and its preparations by highly accurate nephelometric titration.

Abstract

A highly accurate nephelometric titration for the determination of promethazine hydrochloride and its preparations was presented. The titration operating conditions were studied and the solubility product constant of promethazine tetraphenylboron precipitation was determined. The result of the titration is comparable to those of control experiments. The… (More)

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