4-Methylthiophenol from Mexico
4-Methylthiophenol (p-tolyl mercaptan, CH3C6H4SH) is a substituted aromatic thiol with methyl group ortho/para to thiol functionality. Imports as HTS 2930.90.2900 'Other' aromatic organo-sulfur. Key intermediate for pesticides, pharmaceuticals, and antioxidants.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6093.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
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
• Isomeric purity specification required; ortho/meta/para mixtures may complicate classification
• Strong odor; requires specific odorant warnings and secondary containment packaging
• Distinguish from sulfonic acid derivatives in 2904.xx