Copper(II) acetate is prepared by treatment of copper(II) oxide, CuO, or copper(II) carbonate, CuCO3, with acetic acid, followed by crystallization:
CuO + 2CH3COOH → (CH3COO)2Cu + H2O
Used in preparation of Fehling's reagent for sugars
Bluish-green fine powder; hygroscopic. The monohydrate is dimeric; density 1.88 g/cm3; melts at 115°C; decomposes at 240°C; soluble in water and ethanol; and slightly soluble in ether.
Copper(II) acetate is used as a pigment for ceramics; in the manufacture of Paris green; in textile dyeing; as a fungicide; and as a catalyst.
Dark green small crystal with odour of acetic acid
Recystallise it twice from warm dilute acetic acid solutions (5mL/g) by cooling. [Beilstein 2 IV 111.]
Copper(II) acetate is moderately toxic by ingestion and possibly other routes of administration.
LD50 oral (rat): c. 600 mg/kg