making copper (II) chloride, or cupric chloride, which is soluble in water. This allows the copper that was once bonded to the PCB substrate to be rinsed away. It seems simple enough, but that ...

Copper (II) oxide is a higher oxide of copper and belongs to the monoclinic crystal system. It occurs as a black solid with an ionic structure that melts above 1200°C with some loss of oxygen. It is ...

The process can be affected by additives such as acids and water, and further oxidation to copper (II) oxide can occur during preparation. Another preparation route is the copper (II) oxide reduction.