Section 06 Products of the chemical or allied industries 29 Organic chemicals 29 21 Amine-function compounds 29 21 29 Acyclic polyamines and their derivatives, nes; salts thereof 29 21 29 00 Acyclic polyamines and their derivatives, nes; salts thereof Commodity Code Description 29 21 29 00 000 Acyclic polyamines and their derivatives, nes; salts thereof