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Sulfadiazine Sodium from Japan

Sulfadiazine sodium is a water-soluble salt form of the sulfonamide antibiotic sulfadiazine, used for treating toxoplasmosis and other bacterial infections. Classified under HTS 2935.90.4800 as a sulfonamide anti-infective drug per Chapter 29 note (C)(1) for inorganic salts of organic compounds. The sodium salt retains the sulfonamide therapeutic classification.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

Import Tips

Submit salt formation documentation showing equivalence to parent sulfonamide acid for proper 2935 classification

Ensure pharmacopeial compliance (USP/EP) certification; common pitfall is classifying as Chapter 28 inorganic salt

Declare exact purity percentage; impurities >2% may trigger reclassification as chemical mixture