CAS 88-51-7 2-Chloro-4-methyl-6-sulfanilic acid from Mexico
Alternative naming for 2-Chloro-p-toluidine-5-sulfonic acid (CAS 88-51-7), an aromatic toluidine derivative with sulfonic acid group for enhanced solubility in azo pigment production. Precisely matches HTS 2921.43.90.20 due to its chemical definition as a toluidine salt derivative.
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
• Use consistent nomenclature (e.g
• IUPAC or CAS) across shipping docs to match HTS description; request advance ruling for synonym variants
• Monitor for anti-dumping duties on dye intermediates from certain origins