Industrial Polyphosphoric Acid for Polymer Catalysts from Germany
Viscous polyphosphoric acid used as a catalyst in alkylation and polyester production, with extended phosphate chains. It is a chemically defined compound under HTS 2809.20.00.40.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• Test for free phosphoric acid content (<15%) to confirm poly form
• Ship in bulk tankers with heating coils to maintain fluidity
• Declare CAS 37267-86-0 or equivalent for polyphosphoric acids