2904.10.32.00 - Products described in additional U.S. note 3 to section VI

This HTS classification, 2904.10.32.00, covers specific aromatic organic compounds containing only sulfo groups, their salts, and ethyl esters. These substances are characterized by the presence of at least one sulfo group (-SO3H) attached to an aromatic hydrocarbon structure. This category specifically excludes those derivatives where other functional groups, such as nitro or nitroso groups, are also present, or where halogenation occurs alongside the sulfo group.

The distinction between this category and its sibling, 2904.10.37.00, lies in the explicit definition provided by additional U.S. note 3 to section VI. While both fall under "Other" derivatives containing only sulfo groups, ethyl esters, and their salts that are aromatic, the specific coverage of 2904.10.32.00 is precisely defined by this note, making it a more narrowly tailored classification. Importers must consult this note for precise product inclusion.

As this is a leaf node, there are no further subcategories under 2904.10.32.00. Classification at this level is definitive and relies on meeting the criteria outlined for aromatic compounds containing only sulfo groups, their salts, and ethyl esters, as further defined by the specified additional U.S. note. The focus for classification should be on the chemical structure and the absence of other specified functional groups or halogenation.