CAS: 7601-90-3 EC No: 231-512-4 MDL No: MFCD00011325 UN No: UN2920; Haz Class: 8 (3); Packing Group: II Liquid Molecular Formula: HClO₄ MW: 100.46 Boiling Point: 120° Flash Point: 40°C (104°F) Density (g/mL): 1.05