Maleic Acid Anhydride-Derived Maleic Acid from Canada
Maleic acid produced through hydrolysis of maleic anhydride, explicitly covered under HTS 2917.19.23.00 as 'maleic acid' regardless of production method. Used primarily in resin manufacturing and as a precursor for malic acid production. Qualifies as chemically defined acyclic polycarboxylic acid per Chapter 29 note (a).
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
• Include production process documentation showing maleic anhydride hydrolysis to confirm eligibility under this specific subheading
• Label containers clearly distinguishing from direct-synthesized maleic acid to prevent reclassification disputes
• Test for residual maleic anhydride (<0.1%) as high levels may trigger different hazard classifications