1-Naphthylamine-5-sulfonic Acid (Laurent's Acid) from China
Laurent's acid, or 1-naphthylamine-5-sulfonic acid, is a monosulfonated derivative of 1-naphthylamine, used in the manufacturing of acid dyes for wool and silk. It is a chemically defined aromatic monoamine, classified under the tariff item for naphthylamine derivatives. The amine function is the principal characteristic, aligning with heading 29.21.
Duty Rate — China → Canada
0%
Import Tips
• Confirm the product is a separate chemically defined compound under Chapter 29 Note 1(a)
• If the product is a salt, classify it with the parent compound per Note 5(C)(1)
• Provide a certificate of analysis to the CBSA to support the classification