o-Tolidine (2,2'-Dimethylbenzidine) from Mexico
o-Tolidine is a dimethyl-substituted aromatic diamine used in pigment synthesis and analytical reagents. It is subject to HTS 2921.59.4000 classification due to its designation in additional U.S. note 3 to section VI.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
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
• Declare CAS 612-82-8 and provide GC-MS purity reports for classification support
• Avoid bulk packaging that suggests Chapter 38 mixture status
• Monitor EU export authorizations affecting supply chains