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2809.20.00.40/Phosphorus Pentoxide-Derived Polyphosphoric Acid/Canada

Phosphorus Pentoxide-Derived Polyphosphoric Acid from Canada

Polyphosphoric acid produced by dissolving diphosphorus pentoxide (P2O5) in phosphoric acid, forming chains of (HPO3)n. It is used in cyclization reactions and as a dehydrating agent, classified in HTS 2809.20.00.40 as polyphosphoric acids.

Duty Rate — Canada → United States

10%

Rate breakdown

9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
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Import Tips

• Provide manufacturing process details or NMR spectra confirming polyphosphoric structure

• Store and ship in moisture-proof containers to prevent hydrolysis to orthophosphoric acid

• Label with exact H3PO4 equivalent percentage for CBP verification

Phosphorus Pentoxide-Derived Polyphosphoric Acid from Canada — Import Duty Rate | HTS 2809.20.00.40