Halosulfuron Methyl Reference Standard from Canada
High-purity halosulfuron methyl reference standard (≥99.5%) used for analytical method validation, residue analysis, and quality control in pesticide manufacturing. Qualifies under HTS 2935.90.13.00 as the specifically named sulfonamide compound. Packaged in 100mg-1g amber glass vials.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Certificate of Analysis must include HPLC purity, NMR spectrum, and mass balance
• Small package exemption from EPA import notification for <100g analytical standards
• Store at -20°C; validate cold chain integrity during import