CAS: 7697-37-2 EC No: 231-714-2 MDL No: MFCD00011349 RTECS: QU5775000 UN No: UN2031; Haz Class: 8 (5.1); Packing Group: II Liquid Molecular Formula: HNO₃ MW: 63.01 Boiling Point: 120.5° Density (g/mL): 1.413