Pharmaceutical Grade Witherite from Canada
Ultra-pure natural witherite meeting pharmacopeia standards for barium content, used as raw material for radiopaque agents. HTS 2511.20.00.00 applies pre-formulation as natural mineral source. Basis for barium meal contrast media.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Include USP/EP certificates proving natural origin despite high purity
• Declare pharma end-use but emphasize mineral status before processing
• Prepare for FDA scrutiny on purity claims that border synthetic territory