Trimellitic Anhydride (TMA) from China
Trimellitic anhydride is a trifunctional aromatic acid anhydride used in wire enamels, plasticizers, and alkyd coatings. It qualifies under HTS 2917.39.70.00 as an aromatic polycarboxylic acid derivative (anhydride form) not specifically provided for elsewhere. The solid flakes are highly reactive with amines.
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
• Anhydride classified with parent acid per Chapter Note 5(E); provide structural confirmation
• Flammable solid Class 4.1 shipping; ensure proper UN packaging and MSDS documentation