Polyphosphoric Acid Equivalent 115% Basis from Mexico
Phosphoric acid standardized to 115% P2O5 basis, bordering polyphosphoric but classified as simple phosphoric acid under HTS 2809.20.00.30. Used in catalyst production and polymer synthesis. Chemically defined per subheading note excluding true poly forms.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Submit NMR spectra to distinguish from polyphosphoric acids in 2809.20.0010
• Monitor viscosity; high values may trigger reclassification
• Declare exact P2O5 content for accurate duty assessment