Diethyl Phosphite from Germany
Diethyl phosphite is a colorless liquid organophosphorus compound with the formula (C2H5O)2P(O)H, classified under HTS 2920.22.00.00 as a phosphite ester of an inorganic acid of nonmetal (phosphorous acid). It serves as a key reagent in organic synthesis for producing phosphonate derivatives and flame retardants.
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
• Provide Safety Data Sheet (SDS) and purity certificate confirming >98% diethyl phosphite content to avoid reclassification
• Declare exact CAS number (762-04-9) and ensure proper UN 2845 hazardous material shipping documentation
• Verify inhibitor-free formulations; stabilized versions may require note 2(f) justification under Chapter 29