Bis(polyoxyethylene) methylphosphonate
Polyacetals, other polyethers and epoxide resins, in primary forms; polycarbonates, alkyd resins, polyallyl esters and other polyesters, in primary forms: > Other polyethers: > Bis(polyoxyethylene) methylphosphonate
Duty Rate (from China)
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)
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Products classified under HTS 3907.21.00.00
Bis(polyoxyethylene) methylphosphonate (BPEMP)
Bis(polyoxyethylene) methylphosphonate is a specific polyether compound classified under HTS 3907.21.00.00 due to its chemical structure as a phosphonate ester of polyoxyethylene chains. It is primarily used as a flame retardant additive in plastics, textiles, and coatings. This primary form polymer meets the subheading note requiring the named structure to predominate by weight.
Phosflex 71B Flame Retardant
Phosflex 71B is a commercial grade bis(polyoxyethylene) methylphosphonate used as a low-viscosity reactive flame retardant. It falls under HTS 3907.21.00.00 as it matches the specific polyether phosphonate structure in primary liquid form. Commonly incorporated into polyurethane foams and coatings during manufacturing.
Antiblaze 182 Flame Retardant
Antiblaze 182 is a registered trademark for bis(polyoxyethylene) methylphosphonate in primary form, specifically for textile and paper coatings. HTS 3907.21.00.00 applies due to its precise chemical identification as the named polyether. Provides reactive flame retardancy without migration.
TEP-Enhanced BPEMP Polyether
This is a triethyl phosphate-modified bis(polyoxyethylene) methylphosphonate formulation maintaining >95% named polymer content. Classified under 3907.21.00.00 per subheading note (a)(1) as the core monomer units predominate. Used in flexible PU foams for furniture and automotive applications.