On a laboratory scale, BF3 is produced by the thermal decomposition of diazonium salts::PhN2BF4 → PhF + BF3 + N2Alternatively the chemical can be synthesized from Sodium tetrafluoroborate, Boron trioxide, and Sulfuric acid::6 NaBF4 + B2O3 + 6 H2SO4 → 8 BF3 + 6 NaHSO4 + 3 H2OAnhydrous boron trifluoride has a boiling point of −100.3 C and a critical temperature of −12.3 C, so that it can be stored as a refrigerated liquid only between those temperatures.
==Zunanje povezave==* USAF Museum: XB-51* Several photographs of the Martin 234 XB-51 "46-685"