Poly(1,3-phenylene methylphosphonate) Resin Pellets from China
Poly(1,3-phenylene methylphosphonate), a phosphorus-containing polymer, is supplied in primary form as translucent pellets for processing into flame-retardant plastics. It falls under HTS 3911.20.00.00 as a specifically named polymer in primary forms (pellets) not elsewhere classified in Chapter 39. This material meets the subheading note requiring the named monomer units to contribute 95% or more by weight.
Duty Rate — China → United States
41.5%
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
9903.88.0225%Except as provided in headings 9903.88.12, 9903.88.17, 9903.88.20, 9903.88.54, 9903.88.59, 9903.88.61, 9903.88.63, 9903.88.66, 9903.88.67, 9903.88.68, 9903.88.69, or 9903.88.70, articles the product of China, as provided for in U.S. note 20(c) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(d)
Import Tips
• Verify monomer composition documentation showing 95%+ phosphonate content per subheading note (a)(1) to avoid reclassification; obtain supplier certificates confirming it's unmodified primary form; declare as non-hazardous but note phosphorus content for REACH/ TSCA compliance