Distilled Diethyl Phosphite 99.5% Purity from Germany
Vacuum-distilled diethyl phosphite achieving 99.5% purity for pharmaceutical phosphonate intermediate synthesis. Falls under HTS 2920.22.00.00 as high-purity phosphite ester per Chapter 29 chemical definition.
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
• Submit HPLC chromatogram showing single peak >99.5% to confirm chemically defined status
• Pharma imports need DMF reference or equivalent; common rejection for missing impurity profile
• Temperature-controlled shipping mandatory (maintain <15°C) to preserve purity