Phosphonate-Based Flexible Foam Fire Retardant from Canada
Industrial concentrate for spray application in flexible slabstock polyurethane foam production, primarily containing the 3824.91.00.00 phosphonate actives. Used in automotive seating and bedding to achieve California TB 117 fire ratings. HTS classification based on main component being the specified chemical mixture.
Duty Rate — Canada → United States
15%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Analytical certificates from manufacturer confirming phosphonate content critical for CBP review
• Register under TSCA PMN if new formulation; existing FR-2 typically pre-approved