Copper Acetate, , is got by adding copper hydroxide, or carbonate, to acetic acid. It forms dark blue prisms. If acetic acid is allowed to act on metallic copper in the presence of air and moisture, a basic acetate is slowly formed termed verdigris; this has less acetic acid than the previous compound, and is much less soluble. It has a bluish-green colour. Verdigris and arsenious acid boiled together in water form the fine colour termed emerald green—an aceto-arsenite of copper.
Copper Acetate
Chambers's Encyclopaedia, Volume 3: Catarrh to Dion, p. 463
Source scan(s): p. 0474