5501.90.01.00 - Other 🖩

This HTS category, 5501.90.01.00, encompasses synthetic filament tow that does not fall under the specific classifications for nylon or other polyamides, polyesters, acrylic or modacrylic, or polypropylene. Filament tow refers to an untwisted bundle of continuous synthetic filaments, typically produced during the manufacturing process of synthetic fibers. It is essentially a loose assemblage of these filaments before they are spun into yarn or used in other textile applications. This category serves as a residual classification for such materials when their specific polymer composition is not one of the enumerated types in the preceding subheadings.

To accurately classify goods under 5501.90.01.00, it is crucial to differentiate them from the sibling categories. For instance, filament tow specifically identified as being of nylon or other polyamides would be classified under 5501.10, polyesters under 5501.20, acrylic or modacrylic under 5501.30, and polypropylene under 5501.40. If the filament tow is composed of other synthetic polymers not listed in these specific subheadings, such as rayon or certain regenerated cellulosic fibers that are synthetically produced, it would then be directed to this "Other" category.

As a leaf node within the HTS classification system, 5501.90.01.00 has no further subcategories. Therefore, classification into this subheading relies entirely on the exclusion of the material from the more specifically defined categories. Importers and exporters should meticulously identify the exact chemical composition of the synthetic filament tow to ensure correct classification. This might involve reviewing manufacturing specifications, material safety data sheets, or other technical documentation that clearly states the polymer type.