3322. Diphenylcarbazone

Nomenclature

CAS number: 538-62-5; 119295-41-9 ((E)-form) ; 119295-40-8 ((Z)-form)
2-Phenyldiazenecarboxylic acid 2-phenylhydrazide.
C13H12N4O; mol wt 240.26.
C 64.99%, H 5.03%, N 23.32%, O 6.66%.
Chemical structure

Properties

Orange-red needles. mp about 157° with decompn. Insol in water. Sol in alcohol, chloroform, benzene.

Use

As a sensitive reagent for Hg, with which it gives a blue color.