Explanatory notes
… of acyclic hydrocarbons : 2903.41 - - Trifluoromethane (HFC-23) 2903.42 - - Difluoromethane (HFC-32) 2903.43 - - … hydrocarbons : 2903.51 - - 2,3,3,3-Tetrafluoropropene (HFO-1234yf), 1,3,3,3-tetrafluoropropene (HFO-1234ze) and … (HFO-1336mzz). Hydrofluoroolefins (HFOs) are unsaturated fluorocarbons (i.e. molecules with a …