CAS: 7440-39-3 EC No: 231-149-1 MDL No: MFCD00134031 RTECS: CQ8370000 UN No: UN1400; Haz Class: 4.3; Packing Group: II Solid Molecular Formula: Ba MW: 137.33 Melting Point: 725° Boiling Point: 1640° Density (g/mL): 3.6