5-Amino-2-naphthalenesulfonic Acid Monopotassium Salt from Canada
Potassium salt of Laurent's acid (5-Amino-2-naphthalenesulfonic acid) used in specific dye formulations requiring potassium counterions. Falls under HTS 2921.45.10.00 per explicit listing and Chapter note classifying salts with parent organic compound. Chemically defined aromatic amine derivative.
Duty Rate — Canada → United States
16.5%
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
• Certificate must specify counterion (K+) and molar ratio to validate HTS salt classification
• Check potassium import restrictions; may require additional fertilizer/chemical permits