2903.78.00.00/Perfluoro-n-heptanoic Acid Ammonium Salt/Japan

Perfluoro-n-heptanoic Acid Ammonium Salt from Japan

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 — 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

• 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