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

Chemical structure

Dithizone.jpg


Other Properties

Insoluble in water. Soluble in carbon tetrachloride, chloroform Slightly soluble in alcohols.

Composition C13H12N4S
CAS 60-10-6
Melting Point 168 (dec)
Molecular Weight mol. wt. = 256.32

Hazards and Safety

Contact may cause irritation.

Fisher Scientific: MSDS

Additional Information

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