- 0128Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes
- 022809Diphosphorus pentaoxide; phosphoric acid;polyphosphoric acids, whether or not chemically defined:
- 0328092000Phosphoric acid and polyphosphoric acids
US HTS code
2809200040
Polyphosphoric acids
Rates updated· Source: USITC Harmonized Tariff Schedule export
Column 2 rate (Cuba, North Korea): Free
Estimate duty
This code's duty rate (Free) isn't a simple percentage, so it can't be estimated here — check the official source for the exact calculation.
Section 232/301 & notes
No Section 232/301 overlay or footnote noted for this code in the HTS export.
Matching UK commodity code
Sharing the 6-digit HS root 280920.