Section 06 Products of the chemical or allied 29 Organic chemicals 29 03 Halogenated derivatives of hydrocarbons 29 03 77 - - - Heptachlorofluoropropanes 29 03 77 40 - - - Heptachlorofluoropropanes Commodity Code Description 29 03 77 40 000 - - - Heptachlorofluoropropanes