Trimellitic Anhydride Powder from Japan
Trimellitic anhydride (1,2,4-benzenetricarboxylic acid 1,2-anhydride) powder is used in wire enamels, polyester resins, and plasticizers. Explicitly listed under HTS 2917.39.04.00 as a separate chemically defined aromatic polycarboxylic anhydride per Chapter 29 scope. Meets criteria for pure organic compounds without excluded additives.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include REACH/SDS documentation confirming <0.1% trimellitic acid content to avoid respiratory sensitizer restrictions
• Use UN 1545 shipping papers; ensure packaging prevents dust formation per anti-dusting note (g) limits
• Batch testing required to distinguish from pyromellitic anhydride (different HTS) based on melting point 164°C