Norbornane tetracarboxylic dianhydride from Canada
Bicyclic cyclanic compound with four carboxylic groups forming dual anhydride functionalities on norbornane framework. Classified under HTS 2917.20.00.00 as cyclanic polycarboxylic acid derivative. Used in polyimide films for electronics.
Duty Rate — Canada → United States
14.2%
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 X-ray crystallography confirming bicyclic structure essential for classification
• Ensure cleanroom packaging prevents contamination affecting semiconductor end-use
• Declare dual anhydride functionality on customs forms for accurate description