Bromodifluoromethane
Bromodifluoromethane or Halon 1201 or FC-22B1 is a gaseous trihalomethane or a hydrobromofluorocarbon. Synthesis. It can be prepared through the reaction of hydrogen and dibromodifluoromethane at temperature in range 400–600 °C. Critical point data: "T" = 138.83 °C (411.98K); p = 5.2MPa (51.32bar); "V" = 0.275dm·mol. Applications. Bromodifluoromethane was used as a refrigerant and in fire extinguishers. It is a class I ozone depleting substance with ozone depletion potential ODP = 0.74. It was banned by Montreal Protocol in 1996.