Phthalic Isophthalic Anhydride Precursor from China
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 — China → United States
41.5%
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
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
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