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Isophthalic Acid for Unsaturated Polyester Resins from Mexico

Specialty grade isophthalic acid formulated for corrosion-resistant unsaturated polyester resins used in fiberglass reinforced plastics. Pure chemical compound classification under HTS 2917.39.1500 per Chapter 29 note (a). Key for chemical storage tanks and pipes.

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 resin formulation specs showing IPA usage rate (25-35%)

Certify low color (APHA <20) critical for gelcoat applications

Declare VOC content for resin reactor emissions compliance