2905.29 - Other:

This HTS category, 2905.29, encompasses unsaturated acyclic monohydric alcohols that are not otherwise specified within the preceding subcategories. The defining characteristic of these compounds is the presence of both a hydroxyl (-OH) group and at least one carbon-carbon double or triple bond within an open-chain (acyclic) structure, with only one hydroxyl group. These are distinct from acyclic terpene alcohols (2905.22), which are derived from or structurally related to terpenes and often possess cyclic structures, even if they also contain unsaturated acyclic portions.

The classification within 2905.29 is further refined into more specific groupings. This level includes "Allyl alcohol" (2905.29.10.00), a specific unsaturated acyclic monohydric alcohol with distinct chemical properties and applications. Following this, the "Other" category (2905.29.90.00) serves as a residual classification for all other unsaturated acyclic monohydric alcohols that do not fit into the more specific allyl alcohol designation. This distinction is crucial for ensuring accurate tariff application based on the precise chemical identity and structure of the imported or exported substance.