2905.39.90.00 - Other

This HTS category, 2905.39.90.00, encompasses acyclic diols that are not specifically enumerated under other subheadings within 2905.39. It includes a wide variety of dihydric alcohols characterized by the presence of two hydroxyl (-OH) groups attached to an open-chain carbon structure. These compounds serve diverse industrial applications, including use as solvents, plasticizers, and intermediates in the synthesis of polymers and other organic chemicals.

The distinction between this "Other" category and its siblings, such as Butylene glycol (2905.39.10.00), Neopentyl glycol (2905.39.20.00), and Hexylene glycol (2905.39.60.00), lies in the specific chemical structure and nomenclature. While all are diols, the enumerated siblings represent diols with commonly traded volumes and distinct chemical identities. This residual category captures all other acyclic diols that do not fit those specific descriptions.

As a leaf node within the HTS structure, 2905.39.90.00 does not have further subdivisions. Classification into this category depends on the absence of a specific tariff classification for the diol in question under a more granular subheading. Importers must carefully verify the chemical identity of the diol and consult chemical literature or expert opinion if its classification is uncertain, ensuring it does not meet the criteria for a more specifically listed diol.