Blue Carbonate of Copper is a chemical compound composed of copper, carbon, and oxygen. It is also known as cupric carbonate or copper carbonate. It is a blue-green powder that is insoluble in water and has a variety of uses, including as a pigment in paints and inks, as a fungicide, and as a catalyst in the production of polymers. AERATE is a verb meaning to supply air or oxygen to something, usually a liquid.