Cast iron
an electrolytic method used for the manufacture of sodium hydroxide using Castner-Kellner cell.
Cathode
an electrode which pulls the electrons form the external circuit or at which reduction occurs
Ceric oxide
CeO2, a pale-yellow to white powder, soluble in sulphuric acid, insoluble in dilute acid and water; used in ceramics and as a polish for optical glass. Also known as ceria; cerium dioxide; cerium oxide.

