Section 06 Products of the chemical or allied 29 Organic chemicals 29 16 Unsaturated acyclic, cyclic monocarboxylic acids, their... derivatives 29 16 20 Cyclanic...cycloterpenic monocarboxylic acids, etc, their... derivatives Commodity Code Description 29 16 20 00 Cyclanic...cycloterpenic monocarboxylic acids, etc, their... derivatives