4,4'-(Hexafluoroisopropylidene)bis(phthalic anhydride) 98% purity from China
This is a high-purity aromatic polycarboxylic anhydride featuring a hexafluoroisopropylidene bridge between two phthalic anhydride units, classified under HTS 2917.39.12.00 as a specific derivative of aromatic polycarboxylic acids. It serves as a key monomer in producing high-performance fluorinated polyimides for advanced materials.
Duty Rate — China → United States
37.5%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Verify chemical purity and provide Certificate of Analysis (CoA) from manufacturer; ensure packaging complies with UN hazardous material regulations for anhydrides; declare exact CAS number 1107-00-0 to avoid reclassification