4,4'-(Hexafluoroisopropylidene)bis(phthalic anhydride) 98% purity from Mexico
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 — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
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