Thiamethoxam Active Ingredient from Mexico
Thiamethoxam, a second-generation neonicotinoid, contains a thiazole ring system making it a nitrogen-heterocyclic insecticide under HTS 2933.99.17.01. Used primarily for seed treatments against aphids and whiteflies. Its aromatic heterocyclic structure qualifies it for this specific tariff classification in Chapter 29.
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
• Submit detailed chemical structure and CAS number (210880-92-5) for verification
• Declare as 'technical material' not formulation to maintain Chapter 29 classification
• Comply with TSCA import requirements with positive certification