... 50.533110.50.20.5 DESCRIPTION: In powder with white color.USAGE:For lithium tantalate single ... contain rare earth oxides, rare earth salts, metal neodymium, metal praseodymium, Pr-Nd alloy, praseodymium, neodymium and ... dysprosium alloys, metal lanthanum, low iron, low magnesium mixed rare ... develop together. super high purity 99.999%tantalum pentoxide powder