Laurent's Acid (2-Naphthylamine-3,6-disulfonic Acid) from Mexico
Laurent's Acid (2-Naphthylamine-3,6-disulfonic Acid) is a di-sulfonic derivative of 2-naphthylamine, used as a dye coupler in textile coloration. Despite having two sulfonic groups, it is classified under tariff item 2922.21.00 as an aminohydroxynaphthalenesulphonic acid. It is a separate chemically defined organic compound per Chapter 29 Note 1(a).
Duty Rate — Mexico → Canada
0%
Import Tips
• Ensure the product is not mixed with other compounds, as mixtures may fall under different headings
• Confirm that the product is not put up for retail sale, which would trigger Section VI Note 2
• Keep records of the chemical structure and purity to support classification under 2922.21.00