Perfluoroadipic Acid from China
HOOC-(CF2)4-COOH, dicarboxylic perhalogenated acyclic hydrocarbon derivative. Falls under 2903.78.00.00 as fully fluorinated compound meeting all chapter note criteria. Used in fluoropolymer monomer synthesis.
Duty Rate — China → United States
28.7%
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)
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Specify linearity of chain (n-perfluoroadipic vs branched) in technical specs
• Higher melting point requires heated transport considerations
• Dual carboxylic functions; provide titration data confirming both active sites