Polyphosphoric Acid 105% for Flame Retardant Synthesis from Mexico
Polyphosphoric acid at 105% H3PO4 strength, employed in manufacturing ammonium polyphosphate flame retardants. Classified under HTS 2809.20.00.40 for its polymeric phosphoric acid structure.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Certify P2O5 content >80% to avoid downgrade to orthophosphoric acid
• Include end-use statement for flame retardant production to aid classification
• Monitor REACH-like compliance for phosphorus chemicals in supply chain