2-Aminophenol-4-Sulfate (limited impurities) from Canada
2-Aminophenol-4-sulfate is a derivative used in dye coupling, with sulfate group but classified as amino-phenol if not principally sulfonated. It falls under HTS 2922.29.81 as 'other' provided sulfonation doesn't dominate per heading 2930 exclusion notes. Meets Chapter 29 as chemically defined with single oxygen function emphasized.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include functional group analysis showing amino-phenol as principal characteristic, not sulfonated derivative
• Declare sulfate content <20% to stay within 'impurities' allowance of Chapter 29 note (a)