Benzidine Dihydrochloride from Mexico
Benzidine dihydrochloride serves as an intermediate for azo dyes and detection reagents despite carcinogen status. Falls under HTS 2921.49.50.00 as aromatic diamine salt. Chapter note 4(C)(1) directs salt classification with parent amine.
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
• EPA carcinogen import permit required; special handling manifests; limited to research quantities only