3911.90.15.00/Carstabil 90 PE Polymer/Japan

Carstabil 90 PE Polymer from Japan

Carstabil 90 PE Polymer is a thermoplastic primary form resin under HTS 3911.90.15.00, matching the exact chemical description of the aromatic carbodiimide homopolymer with polyethylene. Functions as anti-hydrolysis agent in PET bottle preforms and film extrusion, extending service life in humid environments. Polymer classification confirmed by >95% named monomer content per subheading rules.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

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Import Tips

• Request pre-shipment CBP classification binding ruling with full chemical structure and NMR analysis

• Ensure bill of lading describes as 'primary polymer forms, not articles' explicitly

• Pitfall: heat history documentation needed to prove non-chemically modified status per note (a)(3)