Vanadium Phosphate Flame Retardant from Canada
Intumescent flame retardant mixture of ammonium vanadate, polyphosphates, and melamine for polymer composites. HTS 3824.99.36.00 classification for inorganic vanadium mixtures in plastics. Forms protective char layer during combustion.
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
• UL 94 flammability test results required; TSCA polymer additive notification
• Char formation mechanism documentation
• Pitfall: organic phosphate confusion