Sulfadiazine Technical Grade from China
Sulfadiazine contains a pyrimidine ring (as part of diazine) with nitrogen hetero-atoms only, used as sulfonamide antibiotic API. Falls under HTS 2933.59.95.00 for other pyrimidine compounds per Chapter 29 chemical definitions. Excludes sulfonated derivatives per notes.
Duty Rate — China → United States
19%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Confirm no sulfonation on ring carbon to stay in 2933; CoA essential
• Veterinary grades need separate DMF