CAS: 12044-49-4 EC No: 234-954-6 MDL No: MFCD00049972 UN No: UN1557; Haz Class: 6.1; Packing Group: II 6mm & Down Pieces Molecular Formula: As₂Mg₃ MW: 222.76 Melting Point: 800° Density (g/mL): 3.148