p-Toluidine-m-sulfonic Acid with Stabilizer from Mexico
p-Toluidine-m-sulfonic acid containing added stabilizer for preservation, classified under HTS 2921.43.9040 per Chapter 29 note (f). The stabilizer does not alter its principal chemical identity as toluidine derivative.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• List stabilizer type/concentration (<1%) and justify 'necessary for preservation' per note (f)
• Ensure stabilizer doesn't confer specific end-use that violates note (g) general use requirement
• Maintain batch records showing stabilizer addition post-purification for audit trail