Flame Retardant P-141 from Mexico
Flame Retardant P-141 is bis(1-methylpentyl) methylphosphonate used in polyurethane foams and textiles for fire safety, falling under HTS 2931.49.00.25 as a non-halogenated organo-phosphorus compound. Its P-C bonded structure qualifies it as an organo-inorganic derivative per chapter notes.
Duty Rate — Mexico → United States
100%
Rate breakdown
9903.04.6096.3%Pharmaceuticals Annex IV: patented pharma articles — 100% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Include flash point and autoignition data in SDS; high-temperature stability distinguishes from generic phosphates
• For textile applications, provide fiber treatment protocols to demonstrate chemical identity preservation
• Monitor EPA flame retardant regulations; non-compliance can trigger import alerts beyond tariff issues