M Acid (1-Naphthylamine-5-sulfonic Acid) from Mexico
M Acid provides amino-hydroxy-sulfonic functionality for naphthol AS dye series. Chemically defined per Chapter 29 (a), with oxygen-function amino characteristics. 2922.21.5000 classification for other such naphthalenesulfonic acids.
Duty Rate — Mexico → United States
16.5%
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
• Document synthesis route confirming no halogenation (Chapter note exclusion)
• Specify dry powder vs solution form accurately
• CBP often challenges multi-functional compounds; have ruling ready