Sulfadiazine Silver Pharmaceutical from Canada
Silver sulfadiazine, while typically considered a coordination compound, derives classification from its parent sulfonamide sulfadiazine per Chapter 29 note 5(C)(3). Specifically enumerated under HTS 2935.90.4200 through its sulfadiazine component, used exclusively for burn wound cream formulations. Bulk powder imported for compounding into topical antimicrobial creams.
Duty Rate — Canada → United States
100%
Rate breakdown
9903.04.60100%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
• Use amber/light-proof packaging and include photostability data due to silver compound light sensitivity
• Classify based on predominant sulfadiazine component per Chapter Note 5(C)(3) coordination compound rule