CAS: 74-88-4 EC No: 200-819-5 MDL No: MFCD00001073 RTECS: PA9450000 UN No: UN2644; Haz Class: 6.1; Packing Group: I Liquid Molecular Formula: CH₃I MW: 141.94 Melting Point: -64° Boiling Point: 41-43° Density (g/mL): 2.28 Refractive Index: 1.531