CAS: 1272-21-5 EC No: 215-046-9 MDL No: MFCD00145476 UN No: UN3181; Haz Class: 4.1; Packing Group: III Powder Linear Formula: Gd(C₅H₅)₃ MW: 352.54 Melting Point: 295° (decomposes) Flash Point: 35°C (95°F)