Diphenylamine 2,2'-Dicarboxylic Acid from Canada
Diphenylamine 2,2'-dicarboxylic acid features carboxylic acid groups ortho to the nitrogen linkage, classified as an 'other' derivative under HTS 2921.44.70.00. Used in dye intermediates and pharmaceutical synthesis.
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 batch certificates showing absence of metal impurities per chapter coordination compound notes
• Specify pKa values for proper hazard classification during import
• Document as intermediate to avoid pharmaceutical preparation classification (Chapter 30)