Section 06 Products of the chemical or allied 29 Organic chemicals 29 03 Halogenated derivatives of hydrocarbons 29 03 71 - - Chlorodifluoromethane (HCFC-22) 29 03 71 00 - - Chlorodifluoromethane (HCFC-22) Commodity Code Description 29 03 71 00 000 - - Chlorodifluoromethane (HCFC-22)