Copper acetate

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A dark green crystalline powder. Copper acetate is prepared by the reaction of Acetic acid with copper oxide. The green is unstable and can leave a black residue upon decomposition. Copper acetate is also used as a Pesticide, Fungicide, Catalyst, textile Dye and as a Pigment for paints, inks, and ceramics.

See also Copper acetate, basic.

Chemical structure

Copper acetate.jpg

Synonyms and Related Terms

copper (II) acetate; cupric acetate; cupric diacetate; crystals of Venus, crystallized verdigris; verdet


  • Toxic by ingestion.
  • Contact causes irritation and burns.
  • ThermoFisher: SDS

Physical and Chemical Properties

Soluble in water, ethanol. Slightly soluble in ether, glycerol.

Composition Cu(C2H3O2)2-H2O
CAS 142-71-2
Melting Point 115 C
Density 1.882 g/ml
Molecular Weight mol. wt. = 181.64
Boiling Point 240 C (dec)

Resources and Citations

  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p.231
  • Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 2690