1-(3-Sulfopropyl)-3-methylimidazolium Inner Salt from Mexico
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 — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Classify as inner salt per Chapter 29 organic salt provisions; provide zwitterion structure confirmation; ensure surfactant performance specifications