Dimethylglyoxime

From CAMEO
Jump to: navigation, search

Description

Transparent triclinic crystals used in a colorimetric reagent to detect trace amounts of nickel, copper, cobalt, or bismuth (Odegaard et al 2000). Dimethylglyoxime reacts with soluble nickel to produce a bright red precipitate. Copper produces a blue precipitate, cobalt gives a brown, and bismuth forms a bright yellow.

Synonyms and Related Terms

2,3-butanedionedioxime; 2,3-diisonitrosobutane; diacetyldioxime

Chemical structure

Dimethylglyoxime.jpg


Other Properties

Insoluble in water. Soluble in alcohol, ether, pyridine, acetone.

Solution (0.01N): Dissolve 0.6 g dimethylglyoxime in 500 ml of 95% ethyl alcohol.

Composition C4H8N2O2
CAS 95-45-4
Melting Point 238-240
Molecular Weight mol. wt. = 116.12

Hazards and Safety

Harmful by ingestion. 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.80.

Sources Checked for Data in Record

  • The Merck Index, Susan Budavari (ed.), Merck Research Labs, Whitehouse Station, NJ, 12th Edition, 1996 Comment: entry 3240
  • N.Odegaard, S.Carroll, W.Zimmt, Material Characterization Tests for Objects of Art and Archaeology, Archetype Publications, London, 2000
  • CRC Handbook of Chemistry and Physics, Robert Weast (ed.), CRC Press, Boca Raton, Florida, v. 61, 1980 Comment: Solution (0.01N): Dissolve 0.6 g dimethylglyoxime in 500 ml of 95% ethyl alcohol.
  • Sigma Dyes, Stains and Natural Pigments, Infrared Library, Nicolet, 1991-1995 Comment: OMNIC: formula= C4H8N2O2, CAS= 95-45-4