Maleic Acid for Unsaturated Polyester Resins from Mexico
High-reactivity maleic acid specifically produced for unsaturated polyester resin (UPR) manufacture, classified under HTS 2917.19.23.00. Optimized color (APHA <20) and acid number (390-410 mg KOH/g). Essential raw material for composites and gelcoats.
Duty Rate — Mexico → United States
16.5%
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
• Specify Gardner color scale and APHA color values in COA for resin manufacturers
• Use nitrogen-blanketed storage to prevent oxidation during transshipment
• Verify ortho-phthalic acid ratio compatibility for specific resin formulations