Bis(polyoxyethylene) methylphosphonate (BPEMP) from Canada
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.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Verify chemical composition via certificate of analysis to confirm 95%+ purity of the bis(polyoxyethylene) methylphosphonate structure per subheading notes
• Include Safety Data Sheets (SDS) and REACH compliance docs for flame retardant chemicals to avoid CBP holds
• Avoid misclassification as general polyethers (3907.20); specify exact nomenclature in entry docs