CAS No.: 7440-45-1 Character: Silvery grey metallic ingots or lumps, should be stored in paraffin wax or mineral oil. Molecular Fomula: CeSpecification: CODETREM min %Ce/TREM min %RE Impurities max %Non-RE Impurities max %La+Pr+Nd+Sm+YFeSiSPCe-19999.90.10.020.070.020.01Ce-29999.50.50.030.070.020.01Ce-398.59910.050.070.020.01 Uses: Used as an additive for making special steel, non-ferrous metals and alloys. Also some permanent magnetic materials. Packing: 50kgs of net each in a steel drum evacuated and paraffin wax. or as requirements of consumer.