2921.59.80.10 - 3,3'-Dichlorobenzidine dihydrochloride

This HTS subheading specifically classifies 3,3'-Dichlorobenzidine dihydrochloride. This compound, a salt of a dichlorinated aromatic diamine, finds application in various industrial processes, often as an intermediate in the production of dyes and pigments. Its precise chemical structure, characterized by two chlorine atoms and the dihydrochloride salt form, dictates its classification within this specific level of the tariff schedule.

At this level, the classification focuses on "Other" aromatic polyamines and their derivatives, as well as their salts, that do not fall into more specific preceding categories. This particular subheading is distinguished from its sibling, 2921.59.80.90, which covers "Other" salts of aromatic polyamines and their derivatives not otherwise specified. The inclusion of "dihydrochloride" in the description is the key differentiator, indicating the specific salt form of the underlying benzidine derivative being classified.

As a leaf node, this category does not have further subcategories. Classification under 2921.59.80.10 is therefore definitive for shipments containing 3,3'-Dichlorobenzidine dihydrochloride. Importers and exporters should ensure accurate documentation reflecting the chemical name and form to facilitate smooth customs clearance.