3901.10.50.10 - Linear low density polyethylene

This classification pertains to Linear Low Density Polyethylene (LLDPE) when it is presented in its primary forms. Primary forms generally include powders, granules, flakes, lumps, blocks, and similar bulk forms. LLDPE is a type of polyethylene characterized by its linear molecular structure with short branches, which confers unique physical properties compared to other polyethylene types. Its production typically involves copolymerization of ethylene with alpha-olefins.

This category is distinguished from its siblings by its specific chemical structure and properties. Unlike "Low density polyethylene, except linear low density polyethylene" (3901.10.50.20), which may include branched structures, or "Medium density polyethylene" (3901.10.50.30), which possesses a higher density due to a lower degree of branching and increased chain packing, this category is exclusively for LLDPE. The key differentiator lies in the precise arrangement of ethylene monomers and the presence and length of side branches in the polymer chain.

As this is a leaf node within the HTS, there are no further subcategories for this specific HTS code. Classification therefore concludes at this level, requiring the importer or exporter to confirm that the material is indeed Linear Low Density Polyethylene and meets the density criteria of having a specific gravity of less than 0.94, as established by the preceding hierarchical levels of the tariff schedule.