2904.35.00.00/Ammonium Perfluorooctane Sulfonate/Japan

Ammonium Perfluorooctane Sulfonate from Japan

Ammonium perfluorooctane sulfonate is the ammonium salt form of PFOS, a fluorosurfactant precursor. It qualifies for HTS 2904.35.00.00 as an other salt of perfluorooctane sulfonic acid under the sulfonated, halogenated hydrocarbons of heading 2904.

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 exact cation (ammonium) and anion purity; customs may require NMR/FTIR spectra for verification

• Monitor EU REACH and US TSCA restrictions; many uses prohibited except for essential applications

• Ship in stabilized form only if meeting note (f); otherwise classify as impure mixture