Section 06 Products of the chemical or allied 29 Organic chemicals 29 03 Halogenated derivatives of hydrocarbons 29 03 73 - - Dichlorofluoroethanes (HCFC-141, 141b) 29 03 73 00 - - Dichlorofluoroethanes (HCFC-141, 141b) Commodity Code Description 29 03 73 00 000 - - Dichlorofluoroethanes (HCFC-141, 141b)