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
Insoluble in water. Soluble in carbon tetrachloride, chloroform Slightly soluble in alcohols.
|Melting Point||168 (dec)|
|Molecular Weight||mol. wt. = 256.32|
Hazards and Safety
Contact may cause irritation.
Fisher Scientific: MSDS
N.Odegaard, S.Carroll, W.Zimmt, Material Characterization Tests for Objects of Art and Archaeology Archetype Publications, London, 2000, p.96.
Sources Checked for Data in Record
- 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