Diphenylcarbazone

Description

Orange-red needles that are used as a colorimetric reagent for the detection of soluble Mercury salts in ethnographic and natural science collections (Odegaard et al 2000). Diphenylcarbazone dissolves in ethanol and turns blue when mercury is present.

Chemical structure

Synonyms and Related Terms

phenyldiazenecarboxylic acid 2-phenylhydrazide; phenylazoformic acid 2-phenylhydrazide

Risks

• May be harmful if ingested or inhaled.
• Contact may cause irritation.
• Millipore Sigma: SDS

Physical and Chemical Properties

Insoluble in water. Soluble in alcohol, chloroform, benzene.

Composition	C13H12N4O
CAS	538-62-5
Melting Point	157 C
Molecular Weight	mol. wt. = 240.26

Resources and Citations

• The Merck Index, Susan Budavari (ed.), Merck Research Labs, Whitehouse Station, NJ, 12th Edition, 1996 Comment: entry 3334

• N.Odegaard, S.Carroll, W.Zimmt, Material Characterization Tests for Objects of Art and Archaeology, Archetype Publications, London, 2000, p. 72.