Chlorotrifluoromethane (CClF3) a refrigerant which is being "phased out" has a GWP of 13,900, sulphur hexafluoride (SF6), used as an insulator in the electrical industry and in double glazing, has a GWP of 23,500, and nitrogen trifluoride (NF3), used as an etchant in microelectronics, has a GWP 16,000.
In 2016, there was 89 tonnes of refrigerants in total, including R11 (trichlorofluoromethane), R12 (dichlorodifluoromethane), R13 (
chlorotrifluoromethane), R22 (chlorodifluoromethane), R114 (dichlorotetrafluoroethane), R125, R134a, R141b, cyclopentane, isopentane, propane, and butane.