Perfluoro-n-heptanoic Acid Ammonium Salt from China
Ammonium salt of C6F13COOH, fully perhalogenated carboxylic acid derivative. 2903.78.00.00 applies per chapter note 3(C)(1) classifying inorganic salts with parent organic compound. Common surfactant form in commercial applications.
Duty Rate — China → United States
41.2%
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)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Salt form reduces corrosivity but declare counterion content accurately
• Provide acid equivalent weight calculation for inventory purposes
• Monitor for PFAS aggregate reporting requirements in destination country