Section 06 Products of the chemical or allied industries 29 Organic chemicals 29 21 Amine-function compounds 29 21 51 O-, m-, p-phenylenediamine, diaminotoluenes..., 29 21 51 00 O-, m-, p-phenylenediamine, diaminotoluenes..., Commodity Code Description 29 21 51 00 000 O-, m-, p-phenylenediamine, diaminotoluenes...,