Tebuconazole from Mexico
Tebuconazole is a systemic triazole fungicide with a 1,2,4-triazole heterocyclic ring used in agriculture for cereal crops and turf protection against fungal diseases. Classified under HTS 2934.99.18.00 as an aromatic or modified aromatic heterocyclic pesticide, it contains the characteristic nitrogen heterocyclic structure defined in Chapter 29 notes. The pure technical grade (>95% purity) qualifies as a separate chemically defined compound.
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
• EPA registration number must appear on commercial invoice; unregistered imports face seizure
• Provide HPLC purity analysis certificate; impurities >2% may trigger reclassification
• Declare as 'technical grade pesticide active ingredient' to avoid bulk chemical treatment under 28xx