Polyphosphoric Acid 115% P2O5 Equivalent from China
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 — China → United States
37.5%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
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