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Potentiometric redox titrations in anhydrous dimethylformamide. I. Titrations with a volumetric solution of lead(IV) chloride

Z. Hladký and J. Růža

Institut für analytische Chemie an der Slowakischen Technischen Hochschule, Bratislava 1

 

Abstract:  The copper(I), iron(II), titanium(III) and chromium(II) chlorides were determined by direct oxidimetric method with the aid of volumetric solution of lead(IV) chloride in non-aqueous medium of dimethylformamide. Further sodium iodide, thioglycolic acid, amylmercaptane, dodecylmercaptane, benzylmercaptane, o-thiocresol, pentachlorthiophenol and glutathione were determined. Phenylhydrazine chloride and 2,4-dinitrophenylhydrazine were determined after reaction with excess volumetric solution by titration with titanium(III) chloride. The formal redox potential of the system lead(IV)—lead(II) salt in dimethylformamide depends on the hydrogen chloride content. The accuracy of the titration results is satisfactory and it is in agreement with usual demands on accuracy of volumetric analysis.

Full paper in Portable Document Format: 235a336.pdf (in German)

 

Chemical Papers 23 (5) 336–342 (1969)

Tuesday, January 26, 2021

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