CoCl

Cobalt chloride (CoCl) is an inorganic metal halide compound combining cobalt with chlorine, typically encountered as a hydrated salt or anhydrous form in industrial and laboratory settings. It serves primarily in electroplating and metal surface treatment processes, chemical synthesis as a catalyst or precursor, and as a humidity indicator due to its hygroscopic color-change properties. Engineers select cobalt chloride for applications requiring cobalt ion delivery or catalytic function in corrosive chloride environments, though its use is increasingly restricted in some regions due to toxicological concerns.