Pharmaceutical-Grade tert-Butylhydroquinone from Canada
Pharmaceutical-grade TBHQ is a USP-compliant polyphenolic antioxidant used in drug formulations to protect active ingredients from oxidation, particularly in topical creams and injectables. It matches HTS 2907.29.25.00 as a specifically named polyphenol; phenol-alcohol derivative. High purity ensures stability in sensitive medicinal products.
Duty Rate — Canada → United States
15.5%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Submit Drug Master File or equivalent with import entry; ensure EP/USP certificate and GMP sourcing; declare separately from finished drugs to avoid Chapter 30 classification