Tetramethylammonium Chloride from Mexico
Tetramethylammonium chloride derives from trimethylamine quaternization, used as phase transfer catalyst. While related, classified specifically under HTS 2921.11.00.00 if considered trimethylamine derivative salt; however, typically 292390—note for alternatives.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Confirm if direct trimethylamine salt or quaternary; molecular formula docs critical
• Pitfall: auto-class to 2923.90 without structure review