Fluorinated Dianhydride 4,4'-HFIPA from Japan
4,4'-HFIPA is the standard industry name for 4,4'-(Hexafluoroisopropylidene)bis(phthalic anhydride), a separate chemically defined compound under HTS 2917.39.12.00. It is indispensable for gas separation membranes and high-temperature coatings due to its fluorinated structure.
Duty Rate — Japan → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Declare as 'corrosive solid' for customs valuation; ensure inert atmosphere packaging; check for anti-dumping duties from Asian producers