Diethyl Ethylphosphonate 98% Technical Grade from China
Technical grade diethyl ethylphosphonate at 98% purity is used in industrial synthesis of organophosphorus compounds and as a flame retardant additive precursor. Classified under HTS 2931.43.00.00 as the specific non-halogenated organo-phosphorus derivative, even with minor impurities allowed per Chapter 29 notes. Supplied in industrial drums for chemical manufacturing.
Duty Rate — China → United States
21.2%
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
9903.88.157.5%Except as provided in headings 9903.88.39, 9903.88.42, 9903.88.44, 9903.88.47, 9903.88.49, 9903.88.51, 9903.88.53, 9903.88.55, 9903.88.57, 9903.88.65, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(r) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(s)
Import Tips
• Submit Certificate of Analysis (CoA) specifying minimum 98% purity to distinguish from mixtures classifiable elsewhere
• Declare exact phosphonate content and confirm absence of halogen substitution via NMR or GC-MS data
• Comply with TSCA import certification requirements for new chemical substances