Diisopropyl Naphthalene Sulfonic Acid Sodium Salt from Germany
This sulfonated derivative of diisopropylnaphthalene contains only sulfo groups and is used as a dispersant in dyes and agrochemicals. Classified under HTS 2908.99.1500 as it meets the criteria for halogenated/sulfonated phenol derivatives (naphthalene as phenolic).
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
• Provide GC-MS analysis verifying sulfo content; ensure packaging prevents moisture absorption
• Pitfall: Bulk powder imports often require anti-caking certification to avoid Chapter 38 mixture classification