2917.39.12.00/Fluorinated Dianhydride 4,4'-HFIPA/Japan

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

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

• Declare as 'corrosive solid' for customs valuation; ensure inert atmosphere packaging; check for anti-dumping duties from Asian producers