Diphenylcarbazide
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Description
White crystalline powder used for the colorimetric detection of Chromium in metals, tanned Leather, and pigments (Odegaard et al 2000). Diphenylcarbazide gives a dark blue-violet positive reaction. Other metals, such as Cadmium, Mercury, Magnesium, Silver, Nickel, Tin, and Aluminum will also react with diphenylcarbazide.
Synonyms and Related Terms
2,2'-diphenylcarbonic dihydrazide; 1,5-diphenylcarbazide; S-diphenylcarbazide; DPC
Risks
- Degrades in light.
- May be harmful by ingestion or inhalation.
- Contact may cause irritation.
- ThermoFisher: SDS
Physical and Chemical Properties
Slightly soluble in water. Soluble in hot alcohol, acetone, glacial acetic acid
| Composition | C33H14N4O |
|---|---|
| CAS | 140-22-7 |
| Melting Point | 168-171 C |
| Molecular Weight | mol. wt. = 242.27 |
Resources and Citations
- The Merck Index, Susan Budavari (ed.), Merck Research Labs, Whitehouse Station, NJ, 12th Edition, 1996 Comment: entry 3333
- N.Odegaard, S.Carroll, W.Zimmt, Material Characterization Tests for Objects of Art and Archaeology, Archetype Publications, London, 2000, p.44.