Phosphonate-Based Flexible Foam Fire Retardant from Mexico
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 — Mexico → United States
15%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
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