Metanilic Acid from Mexico
Metanilic acid is a chemically defined aromatic monoamine derivative, specifically 3-aminobenzenesulfonic acid, classified under HTS 2921.42.21.00 as an aniline derivative salt. It serves as a key intermediate in the synthesis of azo dyes, pharmaceuticals, and sulfonamide drugs due to its sulfonic acid and amino functional groups.
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
• Provide Certificate of Analysis (CoA) confirming purity >98% and chemical identity to avoid misclassification as mixtures
• Ensure SDS includes GHS hazard labeling for corrosive sulfonic acid properties; comply with TSCA registration for US entry
• Verify packaging prevents moisture absorption, as hygroscopic nature can affect duty assessment if contaminated