2922.19 - Other:

This category, HTS 2922.19, encompasses amino-alcohols that do not possess more than one type of oxygen function, along with their corresponding ethers, esters, and salts. These compounds are characterized by the presence of both an amine group (-NH2, -NHR, or -NR2) and a hydroxyl group (-OH) within their molecular structure, where the hydroxyl group is not part of a carboxylic acid or ester linkage, and only one such hydroxyl group is present. This exclusion is crucial, differentiating them from more complex polyols or compounds with multiple oxygen-containing functional groups.

Distinguishing this category from its siblings involves a careful examination of the specific structure and substituents. For example, while 2922.11.00.00 covers monoethanolamine and its salts, and 2922.15.00.00 specifically lists triethanolamine, HTS 2922.19 accounts for all other amino-alcohols meeting the general criteria, excluding those explicitly named elsewhere. Similarly, it differentiates from compounds like dextropropoxyphene (2922.14.00.00), which have distinct therapeutic applications and structural complexities, and diethylammonium perfluorooctane sulfonate (2922.16.00.00), a specialized fluorinated compound.

The subcategories within HTS 2922.19 further refine classification based on the aromaticity of the amino-alcohol structure. The "Aromatic:" subcategory pertains to those amino-alcohols where the hydroxyl group is attached to an aromatic ring, while the "Other:" subcategory covers all remaining aliphatic amino-alcohols that fit the general description. This division is essential for accurate tariff application, as aromatic and aliphatic compounds can have distinct industrial uses and physical properties.