Bicyclo[2.2.1]heptane-2,3-dicarboxylic anhydride from Canada
Also known as nadic anhydride, this bicyclic cyclanic derivative features a norbornane structure with fused anhydride functionality. Falls under HTS 2917.20.00.00 as a cyclanic polycarboxylic acid anhydride. Primarily used in high-performance epoxy resins for aerospace composites.
Duty Rate — Canada → United States
14.2%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Provide molecular structure diagrams showing bicyclic cyclanic nature vs. aromatic counterparts
• Include end-use statements if for defense applications requiring ITAR compliance
• Verify packaging prevents moisture absorption which could affect classification purity