Electrochemical oxidation of thiourea
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S. Jayarama Reddy; V.R. Krishnan
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Article
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1970
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Elsevier Science
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It may be noted that in a relatively low pH range only -NH2 and -COOgroups are involved in the formation of the blue complex v but as the pH is raised the -OH group also participates in complex formation and the colour of the solution changes to violet.