CAS: 2950-43-8 EC No: 220-971-6 MDL No: MFCD00011604 RTECS: NC5427000 UN No: UN3260; Haz Class: 8; Packing Group: III Solid Linear Formula: NH₂OSO₃H MW: 113.09 Melting Point: 210° (decomposes)

CAS: 37267-86-0 EC No: 253-433-4 MDL No: MFCD00011351 UN No: UN3260; Haz Class: 8; Packing Group: III Crystalline Linear Formula: HPO₃ MW: 79.98 Melting Point: 200° Boiling Point: 600°/1,013 mmHg Density (g/mL): 2

CAS: 37267-86-0 EC No: 253-433-4 MDL No: MFCD00011351 UN No: UN3260; Haz Class: 8; Packing Group: III Solid Linear Formula: HPO₃ MW: 79.98 Melting Point: 200° Boiling Point: 600°/1,013 mmHg Density (g/mL): 2