Sulfadiazine Sodium Bulk API from Canada
Sulfadiazine sodium is a water-soluble salt form of the sulfonamide antibiotic sulfadiazine, listed specifically under HTS 2935.90.4200. Used in toxoplasmosis treatment and burn wound prophylaxis, this bulk active pharmaceutical ingredient (API) qualifies as a Chapter 29 sulfonamide drug. The sodium salt classification follows Chapter Note 5(C)(1) placing it with the parent organic compound.
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
• Include FDA import permit and reference to approved ANDA/NDA for sulfadiazine products to clear customs efficiently
• Verify sodium content declaration as salts must be classified with parent acid per Chapter 29 note 5(C)(1)