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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. shu

ZERO-CURRENT OSCILLO-POTENTIOMETRIC TITRATION OF PROMETHAZINE HYDROCHLORIDE

1.
Department of Chemistry, Yangzhou Teachers'College, Yangzhou 225002

Received Date: 2 December 1989
Available Online: 13 March 1990

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.
- promethazine hydiochloride,
- sodium tetraphenylborate,
- oscillo-potentiometric titration,
- modified electrode
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