2-Naphthylamine-6-sulfonic Acid (Schaeffer's Acid) from United States
2-Naphthylamine-6-sulfonic acid, commonly called Schaeffer's acid, is an aromatic amine-sulfonic acid used as a diazo component in dye manufacturing. It is a derivative of 2-naphthylamine, with the amine function retained, and is therefore classified under the tariff item for naphthylamine derivatives. The sulfonic acid group does not change its essential character as an amine-function compound.
Duty Rate — United States → Canada
0%
Import Tips
• Confirm the product is a separate chemically defined compound, as per Chapter 29 Note 1(a)
• If the product is a mixture of isomers, ensure it qualifies under Note 1(b)
• Provide a technical data sheet to the CBSA showing the chemical structure and purity to support classification