title: 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 proposed method has been found to be accurate, precise, specific and linear.
authors.affiliation: West China School of Pharmacy, Sichuan University, No. 17, Section 3, Ren-Min-Nan-Lu Rd., Chengdu, Sichuan 610041, PR China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Zhang
authors.forename: Xiancheng
authors.initials: X
authors.lastname: Zhan
authors.forename: Chengrong
authors.initials: C
authors.lastname: Li
authors.forename: Tao
authors.initials: T
authors.lastname: Lin
authors.forename: Linli
authors.initials: L
authors.lastname: Li
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Yin
authors.forename: Ning
authors.initials: N
authors.lastname: He
authors.forename: Yan
authors.initials: Y
authors.lastname: Shi
mesh_terms: D009391:Nephelometry and Turbidimetry / Q000295:instrumentation / Q000379:methods*; D004364:Pharmaceutical Preparations / Q000032:analysis*; D011398:Promethazine / Q000032:analysis*; D015203:Reproducibility of Results; D013607:Tablets; D013678:Technology, Pharmaceutical / Q000379:methods; D017186:Titrimetry / Q000379:methods* / Q000639:trends
chemical_list: D004364:Pharmaceutical Preparations; D013607:Tablets; D011398:Promethazine