Copper carbonate Basic copper carbonate is a green solid completely insoluble in water, alcohol and organic solvents; it decomposes if placed in contact with diluted acids. Also known as green malachite, Copper carbonate is used as raw material in the electroplating and agricultural industries. Copper carbonate is also used for the production of pigments and as raw material used in wood protective formulations. [synonyms] Malachite green. Copper(ii) carbonate. Copper carbonate or cupric carbonate