Biphenyl-4,4'-dicarboxylic Acid from Germany
BPDA provides extended conjugation for high-performance polymers in displays and films. Classified HTS 2917.39.70.00 aromatic polycarboxylic despite extended system. Enables liquid crystalline behavior.
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
• Extended aromatic confirmed single benzene-per-carboxyl unit
• Display manufacturers need angular light scattering for purity
• Molecular weight analysis prevents Chapter 39 prepolymer confusion