Phthalic Acid Crystals from China
Phthalic acid (1,2-benzenedicarboxylic acid) in crystalline form serves as an intermediate for phthalic anhydride production and direct use in resins. Specifically enumerated under HTS 2917.39.04.00 as an aromatic polycarboxylic acid. Qualifies as chemically defined compound per Chapter 29 note (a).
Duty Rate — China → United States
44%
Rate breakdown
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)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• COA must specify isophthalic acid <0.5% to prevent mixture classification under note (b)
• pH testing documentation required; confirm carboxylic acid functionality vs ester derivatives
• Avoid retail packaging that triggers Chapter 29 exclusion for consumer preparations