H Acid Sodium Salt (8-Amino-1-naphthol-3,6-disulfonic Acid Intermediate) from Mexico
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 — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Differentiate from naphthol derivatives; provide synthesis pathway docs
• Common pitfall: retail packs go to Chapter 32