Über die Reinheit der käuflichen Farbreagentien 1,5-Diphenylcarbazid und 1,5-Diphenylcarbazon |
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| Authors: | B Friese F Umland |
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| Institution: | 1. Anorganisch-chemisches Institut, Lehrstuhl für Anorganisch-Analytische Chemie der Westf?lischen Wilhelms-Universit?t, Gievenbecker Weg 9, D-4400, Münster i. W.
2. Abteilung Münster, Lehrgebiet Chemie, P?dagogische Hochschule Westfalen-Lippe, Fliednerstra?e 21, 4400, Münster/Westf.
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| Abstract: | The commercially available analytical reagents 1,5-diphenylcarbazide and 1,5-diphenylcarbazone were found to contain considerable impurities. In 1,5-diphenylcarbazide an appreciable quantity of 1-phenylsemicarbazide was detected whereas 1,5-diphenylcarbazone was found to contain 1,5-diphenylcarbazide. In most of the reports on the stability and composition of the complexes of these reagents given in literature no consideration was made regarding the possibility of interference from these impurities. — Simple syntheses of pure 1,5-diphenylcarbazide and 1,5-diphenylcarbazone are described here. |
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