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2930.90.49.50/2-Mercaptobenzoic Acid/Mexico

2-Mercaptobenzoic Acid from Mexico

2-Mercaptobenzoic acid contains a thiol group ortho to carboxylic acid on benzene ring, classified under HTS 2930.90.4950 as other organo-sulfur acid. Direct C-S bonding qualifies for heading 2930; aromatic structure doesn't change classification. Used in synthesis of thiochromones and dyes.

Duty Rate — Mexico → United States

14.2%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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Import Tips

• Include HPLC purity (>98%) and tautomer confirmation (thiol vs thione form)

• Verify no sulfonation occurred during synthesis per exclusion note 6

• Package under nitrogen to prevent air oxidation during transport