p-Toluidine-m-sulfonic Acid with Stabilizer from Canada
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 — Canada → United States
16.5%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 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