Dithizone
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Description
Blue-black crystalline powder used as a colorimetric reagent for the detction of Zinc in metal objects, corrosion products, and pigments (Odegaard et al 2000). Zinc reacts with dithizone to produce a pink-red residue. Dithizone also reacts with Silver (violet), Copper (dark yellow), Lead (dark red), and Mercury (orange).
Synonyms and Related Terms
diphenylthiocarbazone; phenyldiazenecarbothioic acid 2-phenylhydrazide
Risks
- Contact may cause irritation.
- Fisher Scientific: MSDS
Physical and Chemical Properties
Insoluble in water. Soluble in carbon tetrachloride, chloroform Slightly soluble in alcohols.
| Composition | C13H12N4S |
|---|---|
| CAS | 60-10-6 |
| Melting Point | 168 C (dec) |
| Molecular Weight | mol. wt. = 256.32 |
Resources and Citations
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry #3395
- N.Odegaard, S.Carroll, W.Zimmt, Material Characterization Tests for Objects of Art and Archaeology, Archetype Publications, London, 2000, p.96.