4,4'-Diamino-3,3'-dimethylbiphenyl from China
4,4'-Diamino-3,3'-dimethylbiphenyl, also known as o-tolidine, is a biphenyl-based aromatic polyamine used as an intermediate for high-performance polymers and dyes. Its two amine groups on a dimethylbiphenyl structure classify it under tariff item 2921.59.00.
Duty Rate — China → Canada
0%
Import Tips
• Declare the product as an aromatic polyamine and include the chemical name and CAS number
• Verify if the product is subject to Canadian export or import controls under the Chemical Weapons Convention