Determination of thioacetamide and thiobenzamide using dichloramine-T

V. M. Sadagopa Ramanujam, Netkal M. Made Gowda, Norman M. Trieff

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Simple and accurate titrimetric methods for the determination of thioacetamide and thiobenzamide in partially aqueous media have been developed, based on their stoicheiometric oxidation with dichloramine-T (DCT) at room temperature. The direct titration of the thioamide with DCT involves a two-electron change, giving a carboxylic acid, ammonia and sulphur as oxidation products with p-toluenesulphonamide as the reduction product of DCT. A back-titration procedure involving the oxidation of thioacetamide to acetic acid, ammonium sulphate and sulphur by excess of DCT with a five-electron change has also been developed. The methods described are simple, rapid, reproducible and accurate. The reaction products have been identified by thin-layer and paper chromatography and colour tests.

Original languageEnglish (US)
Pages (from-to)873-876
Number of pages4
JournalThe Analyst
Volume105
Issue number1254
StatePublished - Dec 1 1980

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Keywords

  • Dichloramine-T
  • Oxidimetric titrations
  • Thioamide determination

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Environmental Chemistry
  • Spectroscopy
  • Electrochemistry

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