Metanilic Acid (3-Aminobenzenesulfonic Acid) from Mexico
Though containing sulfonic acid, metanilic acid classifies here as an amino-phenol derivative not qualifying as sulfonated under exclusion notes, with primary oxygen amino-function. It's a key intermediate for azo dyes. Falls under 'other' amino-phenols per hierarchy.
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
• Confirm via NMR/CoA that sulfur is NOT directly carbon-linked as sulfonated derivative to avoid 2930 misclassification
• Ship with anticaking stabilizer only if necessary for transport (note f); excess additives trigger specific-use exclusion
• Declare CAS 121-47-1 precisely; customs often challenges sulfonic acids against organo-sulfur headings