Benzonitrile Sulfonic Acid from Mexico
Benzonitrile sulfonic acid is an aromatic nitrile with sulfonic acid substituent on benzene ring. It qualifies for HTS 2926.90.43.00 as an 'other' aromatic nitrile per additional U.S. note 3 to section VI, maintaining nitrile as principal function.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6093.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Test for sulfonated derivative status per chapter note to avoid Chapter 28 inorganic acid classification
• Include wastewater treatment plan documentation for environmental compliance