Section 06 Products of the chemical or allied industries 29 Organic chemicals 29 21 Amine-function compounds 29 21 51 o-, m-, p-Phenylene diamine, diaminotoluenes, and their derivatives; salts thereof. 29 21 51 00 o-, m-, p-Phenylene diamine, diaminotoluenes, and their derivatives; salts thereof. Commodity Code Description 29 21 51 00 000 o-, m-, p-Phenylene diamine, diaminotoluenes, and their derivatives; salts thereof.
