2-tert-Butyl-4-methoxyphenol from Canada
2-tert-Butyl-4-methoxyphenol serves as an antioxidant in rubber and plastics, featuring ether-phenol functionality. Classified under HTS 2909.50.4500 as a product in additional U.S. note 3 to section VI due to its chemically defined structure. The bulky tert-butyl substitution provides steric hindrance for oxidative stability.
Duty Rate — Canada → United States
110%
Rate breakdown
9903.04.6094.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
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
• Document polymer stabilization end-use to distinguish from pharmaceutical applications
• Confirm <0.1% impurities via GC to maintain pure compound status vs mixture
• Include TSCA inventory status and PMN number if applicable for new introductions