Polyphosphoric Acid 115% from Japan
Polyphosphoric acid with approximately 115% H3PO4 equivalent, a viscous, colorless to yellow liquid used primarily as a phosphorylating agent in organic synthesis. It falls under HTS 2809.20.00.40 as a chemically defined polyphosphoric acid, distinguished from monophosphoric acid by its polymeric structure and higher phosphorus oxide content.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Verify purity and P2O5 content via certificate of analysis to confirm classification under polyphosphoric acids, not simple phosphoric acid
• Ensure UN-approved packaging (e.g
• IBCs with corrosion-resistant liners) and proper Hazmat documentation (UN1805, Class 8)
• Avoid misclassification as fertilizer-grade phosphoric acid; provide lab specs showing polymeric structure