2920.22.00.00/Diethyl Phosphite/Mexico

Diethyl Phosphite from Mexico

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 — Mexico → United States

13.7%

Rate breakdown

9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
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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

Diethyl Phosphite from Mexico — Import Duty Rate | HTS 2920.22.00.00