Propiconazole from Mexico
Propiconazole, a conazole-class fungicide featuring a 1,2,4-triazole ring, protects crops like rice, turf, and ornamentals from fungal pathogens. It qualifies for HTS 2934.99.18.00 as an 'other' aromatic heterocyclic pesticide, distinct from nucleosides, with its modified aromatic structure meeting Chapter 29's chemical definition requirements. Technical grade material is imported for formulation into end-use products.
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
• Label shipments 'UN 3077 Environmentally Hazardous Substance' for DOT compliance
• Include manufacturer's EPA Establishment Number and Product Code on entry docs
• Test for optical isomers; mixtures may classify differently under Chapter 29 isomer rules