Fluorene-2,7-dicarboxylic Acid from Germany
Fluorene-based dicarboxylic acid for high refractive index polymers in optics. Fused ring system provides rigidity. HTS 2917.39.70.00 aromatic polycarboxylic acid classification.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.97, articles the product of a member state of the European Union, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 10 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Tricyclic aromatic confirmed via NMR aromatic proton integration
• Optical grade requires <1ppb fluorescent impurities
• Single compound vs statistical copolymers distinguished by GPC