3901.10.50 - Other

This HTS category, "Other," under subheading 3901.10.50, encompasses various forms of polyethylene with a specific gravity of less than 0.94 that are not specifically provided for in the preceding sibling categories. Specifically, it covers polyethylene polymers in their primary forms that do not meet the criteria of having a relative viscosity of 1.44 or more, as defined in subheading 3901.10.10.00. These materials are foundational chemical substances used in a wide array of manufacturing processes.

The distinction from the sibling category lies in the absence of the specified relative viscosity threshold. While both fall under polyethylene with a specific gravity below 0.94, this "Other" classification accounts for grades of polyethylene that may differ in their molecular weight distribution or processing characteristics, as long as they do not meet the relative viscosity requirement of 3901.10.10.00.

Within this broad "Other" category, further subdivisions exist to refine classification based on density. These include linear low density polyethylene (3901.10.50.10), low density polyethylene that is not linear low density polyethylene (3901.10.50.20), and medium density polyethylene (3901.10.50.30). These subcategories allow for more precise identification of the specific type of polyethylene, reflecting differences in their molecular structure and resulting physical properties, which are critical for their end-use applications.