4-Amino-1-naphthalenesulfonic Acid from Canada
4-Amino-1-naphthalenesulfonic acid is an aromatic monoamine derivative of 1-naphthylamine with a sulfonic acid group, classified under HTS 2921.45.60.00 as a derivative of naphthylamine described in additional U.S. note 3 to section VI. It is commonly used as an intermediate in the production of azo dyes and pigments.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Verify chemical purity and provide Certificate of Analysis (CoA) to confirm classification under note 3 to section VI
• Ensure SDS and proper UN number for hazardous material shipping compliance
• Avoid misclassification as sulfonated dye under Chapter 32 by emphasizing amine-function principal characteristic