Didecylmethylammonium Perfluorooctane Sulfonate 98% Pure from Japan
High-purity (98%) version of this quaternary ammonium salt, chemically defined with minimal impurities. Falls under HTS 2923.40.00.00 per Chapter 29 note (a) as a separate chemically defined organic compound. Commonly used in research and industrial fluorosurfactant synthesis.
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
• Submit Safety Data Sheets (SDS) and purity assays to customs for verification against HTS 2923.40.00.00 specificity
• Avoid misdeclaration as a mixture; Chapter 29 prioritizes pure compounds over formulations
• Check for REACH or TSCA pre-registration if transshipping from EU; PFOS compounds face import scrutiny