1-(3-Sulfopropyl)-3-methylimidazolium Inner Salt from China
A zwitterionic imidazolium compound used in photographic wetting agents and antistatic coatings for film bases. The heterocyclic nitrogen structure provides surface activity essential for processing. Falls under HTS 2933.99.24.00 as a photographic chemical.
Duty Rate — China → United States
6.5%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Classify as inner salt per Chapter 29 organic salt provisions; provide zwitterion structure confirmation; ensure surfactant performance specifications