Tags: Chemical Compound, Chemical Substance.
Nitronium tetrafluoroborate is an inorganic compound with formula NO2BF4. It is a salt of nitronium cation and tetrafluoroborate anion. It is a colorless crystalline solid which reacts with water to form the corrosive acids HF and HNO3. As such it must be handled under water-free conditions. It is sparsely soluble in many organic solvents.