Bicyclo[2.2.1]heptane-2,3-dicarboxylic anhydride from Mexico
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 — Mexico → United States
14.2%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 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