Citation:
Leng Zongzhou, Hu Xiaoya, Dai Jianming, Zhang Chunmei. ZERO-CURRENT OSCILLO-POTENTIOMETRIC TITRATION OF PROMETHAZINE HYDROCHLORIDE[J]. Chinese Journal of Applied Chemistry,
;1990, 7(6): 67-69.
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Platinum plate modified with PVC membrane containing promethazine tetraphenylborate is used as an indicator electrode in zero-current oscillo-potentiometric titration of prometha-zine hydrochloride using sodium tetraphenylborate as titrant. The largest shift of the light-spot on the fluorescent screen indicates the end point of titration. This method is accurate,simple, directly visual and rapid.
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