</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →

99% Pure DMMP Flame Retardant Grade from Canada

High-purity (99%) dimethyl methylphosphonate is a key flame retardant precursor for polyurethane foams and textiles, fitting HTS 2931.41.00.00 due to its specific organo-phosphorus structure without halogens. It serves as a stable, low-toxicity intermediate in polymer manufacturing.

Duty Rate — Canada → United States

13.7%

Rate breakdown

9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada

Import Tips

Include Safety Data Sheets (SDS) and REACH compliance docs for EU-origin goods; test for phosphonate content to prevent reclassification; store in sealed drums to avoid stabilizer additions triggering other headings

99% Pure DMMP Flame Retardant Grade from Canada — Import Duty Rate | HTS 2931.41.00.00