Also known as basic copper carbonate, copper carbonate, was Malachite Green as an amorphous powder of fine particles, a density of 3.85, melting point of 200 degrees decomposition, insoluble in water and alcohol, and dissolved in acid to form the corresponding copper salt, hydroxide dissolved the formation of complexes of copper, sodium, ammonium and alkali metal carbonate in an aqueous solution when boiled in a solution of alkali metal carbonate to produce copper oxide brown, black copper oxide decomposition under 2000C. Instability in hydrogen sulfide atmosphere. Basic copper carbonate by CuO: CO2: H2O ratio dozen different forms of compounds. The industrial production of the formula CuCO3 · Cu (OH) 2 · XH2O. The solubility in water is 0.0008%, the decomposition temperature of 200-2200C and low toxicity.