Sulfadiazine Sodium from Canada
Sulfadiazine sodium is the water-soluble salt form of sulfadiazine, a sulfonamide antibiotic used to treat toxoplasmosis, rheumatic fever, and as part of combination therapy for certain infections. Classified under HTS 2935.90.60.00 as a sulfonamide drug per Chapter 29 note (C)(1) for inorganic salts of organic compounds. The sodium salt retains the sulfonamide classification of the parent compound.
Duty Rate — Canada → United States
Rate breakdown
Import Tips
• Include pharmacopeial certificates (USP/EP) verifying sodium salt purity and pH specifications required for injectable formulations
• Declare as pharmaceutical active ingredient, not technical grade, to maintain drug classification and avoid higher chemical tariffs
• Provide evidence of intended medical use to prevent misclassification as industrial chemical intermediates