Perfluoroadipic Acid from Mexico
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 — Mexico → United States
3.7%
Rate breakdown
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