CuCO3 (Copper Carbonate)

Notas

In ceramic applications, copper(II) carbonate hydroxide—often referred to as copper carbonate—serves as a primary source of copper oxide within glaze formulations. Upon heating, the compound undergoes thermal decomposition, releasing carbon dioxide and water vapor to leave behind copper(II) oxide. As a potent colorant, it is widely utilized to achieve a diverse spectrum of hues; in oxidation atmospheres, it typically produces greens and teals, whereas in reduction, it is responsible for the classic copper-red and oxblood glazes. Beyond its role as a pigment, copper acts as a powerful flux, significantly lowering the melting temperature of a glaze and increasing its fluidity. Due to its high solubility and potential for volatility at high temperatures, it can influence the surface texture and clarity of the finished glass. Its chemical structure as a coordination polymer requires careful handling during the batch mixing process to ensure uniform color distribution and to mitigate the risks associated with its reactive nature.