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%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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