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
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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