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%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
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