2921.49.50.00 - Other 🖩

This HTS category, 2921.49.50.00, represents a residual classification for aromatic monoamines and their derivatives that do not fit into more specific subcategories within heading 2921. It encompasses a broad range of organic compounds characterized by the presence of at least one amino group (-NH2, -NHR, or -NR2) attached directly to an aromatic ring, where the amino nitrogen is not part of a heterocyclic ring. The classification here signifies that the chemical substance is an aromatic monoamine or its derivative, but it doesn't meet the criteria for any preceding, more narrowly defined classifications within this section of the tariff.

It is crucial to distinguish this "Other" classification from its sibling, 2921.49.45.00. While both fall under the broader category of aromatic monoamines, 2921.49.45.00 is specifically designated for products that meet the criteria outlined in additional U.S. note 3 to section VI. This implies that 2921.49.50.00 applies to aromatic monoamines and their derivatives that *do not* satisfy the conditions stipulated in that specific additional U.S. note, making it a fallback classification for such substances.

As this is a leaf node, there are no further subcategories to introduce. Therefore, the primary focus for classification under 2921.49.50.00 is to exhaust all other more specific classifications within heading 2921. If a substance is an aromatic monoamine or its derivative, and it is not covered by any prior, more precise HTS codes within this heading, nor does it meet the specific criteria of additional U.S. note 3 to section VI, then it will fall under this residual "Other" classification. Examples could include specific substituted anilines or naphthylamines with unique structural features or industrial applications not otherwise provided for.