Oxidimetric Titration of Some Phenothiazine Neuroleptics and Antiallergics with Potassium Dichromate

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抄録

Three simple, rapid and accurate titrimetric procedures using potassium dichromate as titrant are described for the determination of six phenothiazine drugs in a pure form and in dosage forms. The procedures are based on the oxidation of phenothiazines in an acid medium to colorless sulfoxides via orange- or purple-colored intermediates. In the first method, phenothiazines are titrated directly in a H2SO4 medium to a colorless end-point. In the second procedure, a known excess of oxidant is added, and after a specified time the residual oxidant is determined iodometrically. The third method employs potentiometric end-point detection. The optimum reaction conditions and other analytical parameters are evaluated and the molar-ratio of the reaction is also calculated. The influence of the substrates commonly employed as excipients with phenothiazine drugs has been studied. A statistical comparison of the results obtained for pure drugs with those of an official method shows excellent agreement and indicates no significant difference in precision.

収録刊行物

  • Analytical sciences : the international journal of the Japan Society for Analytical Chemistry

    Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 15(1), 67-71, 1999-01

    社団法人 日本分析化学会

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各種コード

  • NII論文ID(NAID)
    10002418399
  • NII書誌ID(NCID)
    AA10500785
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09106340
  • NDL 記事登録ID
    1117007
  • NDL 雑誌分類
    ZP4(科学技術--化学・化学工業--分析化学)
  • NDL 請求記号
    Z54-F482
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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