Phthalic Isophthalic Anhydride Precursor from Mexico
Isophthalic acid serving as precursor for mixed phthalic-isophthalic anhydride in alkyd resin production. Classified specifically as isophthalic acid under 2917.39.1500 before anhydride formation. Used in industrial paints and varnishes.
Duty Rate — Mexico → United States
16.5%
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
• Specify anhydride reaction yield expectations in end-use documentation
• Monitor for decarboxylation impurities affecting anhydride quality
• Ensure acid number specification (≥670 mg KOH/g) met