CAS: 7439-94-3 EC No: 231-103-0 MDL No: MFCD00011098 UN No: UN3178; Haz Class: 4.1; Packing Group: II Solid Molecular Formula: Lu MW: 174.97 Melting Point: 1663° Boiling Point: 3402° Density (g/mL): 9.84