Section 06 PRODUCTS OF THE CHEMICAL OR ALLIED 29 Organic Chemicals 29 21 AMINE-FUNCTION COMPOUNDS 29 21 51 o-, m-, p-Phenylenediamine, diaminotoluenes, and their derivatives; salts thereo Commodity Code Description 29 21 51 00 o-, m-, p-Phenylenediamine, diaminotoluenes, and their derivatives; salts thereo