Purified Isophthalic Acid (PIA) from Mexico
High-purity isophthalic acid (>99.8%) produced via cyclohexane oxidation process, used in high-performance coatings and specialty polyesters. Meets HTS 2917.39.1500 criteria as chemically defined aromatic dicarboxylic acid. Essential comonomer for PET bottle resins.
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
• Include chromatogram confirming <20 ppm p-toluic acid impurity
• Declare CAS 121-91-5 and molecular formula C8H6O4 on commercial invoice
• Confirm no hormone precursors per Chapter 29 hormone definitions