3,3'-Diaminobenzidine (Tetraaminobiphenyl) from Mexico
3,3'-Diaminobenzidine, also known as tetraaminobiphenyl, is a chemically defined aromatic polyamine with four amine groups on a biphenyl backbone. It is used primarily as a monomer in the production of polybenzimidazole polymers and other high-performance engineering plastics. As an aromatic polyamine and its derivatives, it falls under tariff item 2921.59.00.
Duty Rate — Mexico → Canada
0%
Import Tips
• Ensure the product is a separate chemically defined organic compound and not mixed with other substances, as Chapter 29 Note 1(a) applies
• Have the chemical name and CAS number ready for the CBSA officer
• Verify whether the product requires a permit under the Chemicals Management Plan or other environmental regulations