Thiamethoxam Active Ingredient from Canada
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 — Canada → United States
100%
Rate breakdown
9903.04.6093.5%Pharmaceuticals Annex IV: patented pharma articles — 100% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
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