Maleic Anhydride with Stabilizer Additive from Canada
Maleic anhydride containing <0.05% polymerization inhibitor (hydroquinone) for transport stability, classified HTS 2917.14.5000 per Chapter 29 note (f). Remains chemically defined acyclic anhydride for resin production.
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
• Document stabilizer concentration (<1%) to qualify under Chapter 29 note (f) exception
• Provide quantitative HPLC analysis showing maleic anhydride as principal component (>98%)
• Separate from polyester prepolymers which classify under Chapter 39