CAS: 7440-47-3 EC No: 231-157-5 MDL No: MFCD00010944 RTECS: GB4200000 UN No: UN3089; Haz Class: 4.1; Packing Group: III Powder, apparent density 2.0-3.0g/cm 3 Molecular Formula: Cr MW: 52.00 Melting Point: 1857° Boiling Point: 2672° Density (g/mL): 7.14