Diphenylcarbazide

From CAMEO
Jump to navigation Jump to search

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

Chemical structure

Diphenylcarbazide.jpg


Other Properties

Slightly soluble in water. Soluble in hot alcohol, acetone, glacial acetic acid

Composition C33H14N4O
CAS 140-22-7
Melting Point 168-171
Molecular Weight mol. wt. = 242.27

Hazards and Safety

Degrades in light.

May be harmful by ingestion or inhalation. Contact may cause irritation.

Mallinckrodt Baker: MSDS

Additional Information

N.Odegaard, S.Carroll, W.Zimmt, Material Characterization Tests for Objects of Art and Archaeology Archetype Publications, London, 2000, p.44.

Sources Checked for Data in Record

  • 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

Retrieved from "https://cameo.mfa.org/index.php?title=Diphenylcarbazide&oldid=49576"