2901.29 - Other:

This HTS category, 2901.29, encompasses "other" unsaturated acyclic hydrocarbons. It serves as a residual classification for unsaturated acyclic hydrocarbons that are not specifically enumerated under preceding subheadings within 2901.2. These are organic compounds characterized by a chain of carbon atoms with at least one double or triple bond, and they are not cyclic.

Distinct from its sibling categories, 2901.29.00 does not specifically cover ethylene (2901.21), propene (2901.22), butene and its isomers (2901.23), or buta-1,3-diene and isoprene (2901.24). Therefore, any unsaturated acyclic hydrocarbon that does not fall into these more specific classifications will be considered under 2901.29.

The subcategories within 2901.29 provide further distinction based on the origin of the hydrocarbon. 2901.29.10 applies to those derived, in whole or in part, from petroleum, shale oil, or natural gas, reflecting common industrial sourcing. The remaining unsaturated acyclic hydrocarbons, not originating from these specific sources or not fitting into the more precise sibling categories, are classified under 2901.29.50.00.