Fluorenone-2-sulfonic Acid from Canada
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 — Canada → United States
15.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
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