Alkaline etching

Alkaline etching is a chemical process used to selectively remove materials, most commonly copper, from metal surfaces or printed circuit boards under alkaline conditions[4][7][8][9][10]. In PCB manufacturing, the alkaline etchant typically consists of copper chloride complexed with ammonia. The etch reaction removes copper, while a regeneration reaction restores the etchant; precise control of pH, chloride concentration, copper content, and temperature is necessary[1][2][9][10]. Alkaline etching offers a high etch rate and uniform results, but it is not a biological target. The process has industrial applications in metal surface preparation and PCB fabrication, not in patient treatment or molecular pharmacology. If you need structured target information for molecular/biological entries, then this entry should be flagged as incorrect, as "Alkaline etching" is a process, not a molecule or receptor.

Other names

Alkali etchingalkaline etchant process