Styrene Sulfonic Acid Sodium Salt from Germany
Sodium styrenesulfonate (CAS 1230-52-2) monomer contains sulfo group on phenylethylene, classified as sulfonated phenol derivative under HTS 2908.99.1500. Used in polymer synthesis for ion exchange resins.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.97, articles the product of a member state of the European Union, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 10 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Polymerization inhibitor content specification; inhibitor-free grades need stabilization
• Pitfall: Monomer/polymer confusion - provide GPC confirming Mw <500 Da