👉 Cobaltocyanide is a chemical compound with the formula Co3N2O4. It is a dark blue crystal that is commonly found in the rocks of the earth's crust and is also used as a pigment in the production of paint, ink, and other pigments. The name "cobaltocyanide" comes from the fact that it is formed by combining cobalt with three other elements: nitrogen (N), oxygen (O), and potassium (K). The compound