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Benzene-1,2,3-tricarboxylic Acid (Hemicellic Acid) from Canada

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 — Canada → United States

16.5%

Rate breakdown

9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, 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