Naphthol AS-BS Dye Coupling Agent from Mexico
Naphthol AS-BS is a derivative of naphthol AS, featuring an aromatic cyclic amide structure modified for enhanced coupling in ice dyeing processes for cellulosic fabrics. Classified under HTS 2924.29.36.00 as an 'other' aromatic naphthol AS derivative with carboxyamide function. It enables production of scarlet-red shades in textile dyeing industries.
Duty Rate — Mexico → 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
• Label with exact CAS number (e.g
• 92-76-2 variants) and amide content to distinguish from non-aromatic amides
• Comply with REACH/TSCA pre-registration for chemical imports; retain supplier affidavits on derivative status