Section 06 Products of the chemical or allied 29 Organic chemicals 29 03 Halogenated derivatives of hydrocarbons 29 03 77 - - - - Dichlorohexafluoropropanes 29 03 77 91 - - - - Dichlorohexafluoropropanes Commodity Code Description 29 03 77 91 000 - - - - Dichlorohexafluoropropanes