N,N'-Diphenyl-p-phenylenediamine (DPPD) from Canada
N,N'-Diphenyl-p-phenylenediamine functions as an antiozonant in tire rubber compounds. Classified under HTS 2921.59.80.90 as aromatic polyamine derivative with N-substitution. Secondary amine functionality provides oxidation resistance.
Duty Rate — Canada → 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
9903.05.2910%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
• Tire industry specifications require >96% assay confirmation
• Melting point range documentation verifies isomer identity
• Prevent aggregation by specifying non-dusted transport conditions