Freon 12B1 Other names: Halon 1211 Difluorochlorobromomethane Bromochlorodifluoromethane F1211 Formula: CBrClF2 CAS: 353-59-3 Weight: 165,37 g/mol Boiling point: -3,3 °C Melting point: -160,5 °C Density: N/A