2,2-Bis(3,4-dicarboxyphenyl)hexafluoropropane Dianhydride from Canada
This systematic name refers to 4,4'-(Hexafluoroisopropylidene)bis(phthalic anhydride), a specific aromatic anhydride in HTS 2917.39.12.00, valued for producing colorless polyimides in optical applications. Its chemical purity ensures consistent polymerization properties.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide NMR spectrum in documentation for purity verification; use nitrogen-purged containers; comply with EPA pre-manufacture notice if resynthesizing