Fluorenone-2-sulfonic Acid from Mexico
Fluorenone-2-sulfonic acid combines cyclic aromatic ketone with sulfonic substitution, fitting sulfonated derivative criteria of HTS 2914.79.40.00. Used in dye intermediates.
Duty Rate — Mexico → United States
5.5%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• UV-Vis spectrum confirms ketone chromophore essential for classification
• Avoid retail dye packing per chapter exclusion note (g)
• pH stability data required for aqueous handling declarations