H Acid Sodium Salt (8-Amino-1-naphthol-3,6-disulfonic Acid Intermediate) from Canada
While derived from anthraquinone processes, pure H acid relates but classified here if sulfonated quinone form under HTS 2914.79.30.00. Used in azo dye coupling as per Chapter notes on dye production standards.
Duty Rate — Canada → United States
10%
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
• Differentiate from naphthol derivatives; provide synthesis pathway docs
• Common pitfall: retail packs go to Chapter 32