4,4'-Diaminodiphenyl Ether (ODA) from Germany
4,4'-Diaminodiphenyl ether (oxydianiline, ODA) is an aromatic diamine used in high-performance polyimide and polyetherimide production. Classified under HTS 2921.59.80.90 as other aromatic polyamine derivative. The ether linkage between aromatic rings maintains polyamine classification.
Duty Rate — Germany → United States
18.5%
Rate breakdown
9903.04.628.5%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
9903.05.3910%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
• Provide monomer purity certificate (>98%) and HPLC analysis for classification
• End-use certificates may be required for aerospace/defense applications
• Avoid packaging that suggests finished polymer use to maintain intermediate status