Tobias Acid Sodium Salt (2-Naphthylamine-6-Sulfonic Acid precursor) from Canada
Sodium salt of naphthol sulfonic acid used in dye chemistry, classified under HTS 2907.15.60.00 'other naphthols.' Key for naphthol AS dye series.
Duty Rate — Canada → United States
15.5%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Ensure no amino substitution that would move to 2922 per chapter notes
• Bulk chemical labeling required; retail packing changes classification
• Verify against chapter exclusions for immunological products (3002)