Viscose Rayon Artificial Staple Fibers, Not Processed for Spinning

Viscose rayon, lyocell (e.g., Tencel), and modal are all regenerated cellulose fibers but differ by production process and polymer characteristics. Viscose rayon is classified under heading 5504 (viscose rayon), while lyocell and modal fall under heading 5504 or 5504 depending on their specific chemistry — but the US schedule places non-viscose artificial staple fibers in heading 550490. Importers should obtain a fiber identification certificate from the manufacturer specifying the production process to ensure correct classification between 5504100000 and 5504900000.

While there is no mandatory US customs documentation requirement specific to viscose rayon's environmental sourcing, many US buyers now require suppliers to provide forest stewardship certifications (such as FSC or PEFC) or Canopy-aligned sourcing commitments, particularly given scrutiny of wood pulp origins. These are commercial rather than regulatory requirements at the border, but failure to provide them can affect market access with major retail and apparel customers.