Ethoxyquin Antioxidant Powder from Mexico
Pure ethoxyquin (1,2-Dihydro-6-ethoxy-2,2,4-trimethylquinoline) in powder form used primarily as a synthetic antioxidant to prevent oxidation in animal feeds and pet foods. This chemically defined heterocyclic compound with a quinoline ring system falls under HTS 2933.49.10.00 as it matches the specific legal description. It is imported as a separate organic compound for industrial formulation into feed preservatives.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6093.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
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
• Verify purity certificate (typically 95%+ ethoxyquin) as impurities affect classification; ensure SDS includes CAS 91-53-2 and quinoline structure confirmation
• Common pitfall: misclassification as general feed additive under Chapter 23 - provide chemical analysis to prove it's a separate organic compound