Asulam (Methyl-4-aminobenzenesulfonylcarbamate) from Mexico
Asulam is a sulfonamide herbicide (Methyl-4-aminobenzenesulfonylcarbamate) specifically named in HTS 2935.90.06.00 as a pure chemical compound. Used for broadleaf weed control in cereals and turf, it functions by inhibiting cellulose biosynthesis in plants. Classification under heading 2935 reflects its sulfonamide chemical structure per Chapter 29 notes.
Duty Rate — Mexico → United States
6.5%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• EPA pesticide registration required; provide technical grade certificate (>95% purity) to qualify as pure compound under 2935.90.06.00
• Include phytosanitary certificates if residual herbicides detected; avoid formulation with surfactants that would classify under 3808
• Label as 'technical Asulam' not 'herbicide formulation' to prevent misclassification as pesticide preparation