Benzenesulfonamide from Canada
Benzenesulfonamide is a chemically defined organic compound featuring a sulfonamide functional group directly attached to a benzene ring. It falls under HTS 2935.90.10.00 as a specific sulfonamide listed in the tariff description for Chapter 29, which covers separate chemically defined organic compounds. Primarily used as an intermediate in pharmaceutical and dye synthesis.
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
• Provide detailed chemical analysis certificates confirming purity and structure to verify classification under 2935.90.10.00
• Ensure SDS (Safety Data Sheets) comply with HAZMAT regulations as sulfonamides may require special handling
• Avoid misclassification as general sulfonated derivatives by documenting specific chemical identity matching tariff listing