Cerium Oxide Polishing Powder | Image Resource : img3.exportersindia.com Cerium is a ductile, soft and malleable metal. It is an iron-grey metal and it is also harder than lead. As a metal it is actually very reactive since it tarnishes promptly when it comes in contact with air. The oxidization process of this metal becomes slow when it comes in contact with cold water and the same process becomes rapid when it comes in contact with hot water. When it comes to cerium it has a number of different uses other than being used as a main element for cerium oxide polishing powder . The metal is quite useful when it is used as a core in arc lamps for carbon electrodes. It is also used in the incandescent mantles for the purpose of gas lighting. The metal is used in iron alloys and aluminium. Cerium is also quite useful when it comes to making permanent magnets. The use of cerium oxide polishing powder is seen extensively in the glass polishing industry. Cerium oxide forms a