Section 06 Products of the chemical or allied industries 29 Organic chemicals 29 03 Halogenated derivatives of hydrocarbons. 29 03 81 1,2,3,4,5,6-Hexachlorocyclohexane (HCH) (ISO), including lindane (ISO, INN) Commodity Code Description 29 03 81 00 1,2,3,4,5,6-Hexachlorocyclohexane (HCH) (ISO), including lindane (ISO, INN)