Naphthalene-2-Sulfonic Acid from Mexico
Naphthalene-2-sulfonic acid results from sulfonation of naphthalene hydrocarbon at the 2-position, fitting HTS 2904.99.50.00 as other sulfonated hydrocarbon derivatives. Essential intermediate for dye manufacturing and as a wetting agent.
Duty Rate — Mexico → United States
13.7%
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 positional isomer confirmation (CAS 93-11-8) via HPLC chromatogram to prevent misclassification as beta-naphthol derivatives
• Use DOT-approved packaging for corrosive liquids; segregate from amines/bases during transport