5-Amino-2-naphthalenesulfonic Acid (1,5 Cleve's Acid) from Mexico
5-Amino-2-naphthalenesulfonic acid, also known as Cleve's acid 1,5-isomer, is a naphthylamine derivative used as a coupler in azo pigment production. It is a chemically defined aromatic monoamine with a sulfonic acid substituent, falling under the tariff item for naphthylamine derivatives. The amine function is the principal characteristic, aligning with heading 29.21.
Duty Rate — Mexico → Canada
0%
Import Tips
• Verify the product is a separate chemically defined compound, as required by Chapter 29 Note 1(a)
• If the product is a mixture of isomers, ensure it is covered by Note 1(b)
• Keep documentation of the chemical name and CAS number for CBSA verification