Benzene-1,2,3-tricarboxylic Acid (Hemicellic Acid) from Japan
Hemicellic acid is a tri-carboxylic aromatic acid used in resin synthesis and as a pharmaceutical intermediate. It falls under HTS 2917.39.70.00 as an aromatic polycarboxylic acid not otherwise specified. The 1,2,3-substitution pattern gives unique reactivity.
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
• NMR/GC-MS analysis required to confirm isomer position distinguishing from trimellitic
• Pharma intermediate shipments need DMF filing status documentation
• Avoid Chapter 29 heading 2924 if primary amine function predominates structure