Fluorenone-2-sulfonic Acid from Japan
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 — Japan → United States
22%
Rate breakdown
9903.04.629.5%Patented pharmaceutical articles that are the product of Japan, of a European Union member country, of South Korea, of Switzerland, or of Liechtenstein as provided for in subdivisions (c) and (f) of U.S. note 40 to this subchapter
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 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