Polyphosphoric Acid 115% P2O5 Equivalent from Mexico
Concentrated polyphosphoric acid with 115% P2O5 equivalent, used in organic synthesis, catalyst manufacturing, and polymer production. It qualifies under HTS 2809.20.00 as chemically defined polyphosphoric acids per Chapter 28 definitions, distinguished by its polymeric phosphate 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
• Provide NMR or spectroscopic proof of polyphosphate chain length to confirm classification
• Declare exact P2O5 equivalent on commercial invoice to match subheading specifications