ZERO-CURRENT OSCILLO-POTENTIOMETRIC TITRATION OF PROMETHAZINE HYDROCHLORIDE

Chinese Journal of Applied Chemistry ›› 1990, Vol. 0 ›› Issue (6): 67-69.

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ZERO-CURRENT OSCILLO-POTENTIOMETRIC TITRATION OF PROMETHAZINE HYDROCHLORIDE

Leng Zongzhou, Hu Xiaoya, Dai Jianming, Zhang Chunmei

Department of Chemistry, Yangzhou Teachers'College, Yangzhou 225002

Received:1989-12-02 Revised:1990-03-13 Published:1990-12-10 Online:1990-12-10

Abstract

Abstract: 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.

Key words: promethazine hydiochloride, sodium tetraphenylborate, oscillo-potentiometric titration, modified electrode

Leng Zongzhou, Hu Xiaoya, Dai Jianming, Zhang Chunmei. ZERO-CURRENT OSCILLO-POTENTIOMETRIC TITRATION OF PROMETHAZINE HYDROCHLORIDE[J]. Chinese Journal of Applied Chemistry, 1990, 0(6): 67-69.

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ZERO-CURRENT OSCILLO-POTENTIOMETRIC TITRATION OF PROMETHAZINE HYDROCHLORIDE

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