Polyphosphoric Acid 83-85% P2O5 from Mexico
A superphosphoric acid containing 83-85% P2O5, used in the production of phosphate esters and as a catalyst in polymerization reactions. Classified under HTS 2809.20.00.40 due to its polyphosphoric composition exceeding standard orthophosphoric acid.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include detailed compositional analysis showing polyphosphate chains to distinguish from 2809.20.0010
• Comply with DOT/UN shipping requirements for corrosive liquids; use polyethylene-lined drums
• Check for phosphorus content restrictions under TSCA; register if new chemical use