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2809.20.00.20

Phosphoric acid / Fertilizer grade / Other

Classification path

  1. Diphosphorus pentaoxide; phosphoric acid;polyphosphoric acids, whether or not chemically defined
  2. Phosphoric acid and polyphosphoric acids
  3. Phosphoric acid
  4. Fertilizer grade
  5. Other

Rates of duty

General (MFN)
Free
Column 2Cuba, North Korea, Russia, Belarus
Free
Unit of quantity
t

Related lines in heading 2809

About heading 2809

Diphosphorus pentaoxide; phosphoric acid;polyphosphoric acids, whether or not chemically defined

Heading 2809 covers diphosphorus pentaoxide, phosphoric acid, and polyphosphoric acids, whether or not chemically defined. It splits first between diphosphorus pentaoxide in 2809.10 and phosphoric acid or polyphosphoric acids in 2809.20. The 2809.20 lines separate fertilizer-grade phosphoric acid by available P2O5 equivalent, other phosphoric acid, and polyphosphoric acids.

Full guide to heading 2809

Products in this heading

  • Diphosphorus pentaoxide used as a dehydrating agent
  • Fertilizer-grade phosphoric acid containing less than 65% available diphosphorus pentaoxide equivalents
  • Other fertilizer-grade phosphoric acid
  • Technical or food-grade phosphoric acid
  • Polyphosphoric acid used in chemical synthesis
  • Phosphoric acid used for metal treatment or pH adjustment

Frequently asked questions

What is the HTS code for phosphoric acid?

Fertilizer-grade phosphoric acid with less than 65% available diphosphorus pentaoxide equivalents is 2809.20.00.10, general (MFN) Free; other phosphoric acid is 2809.20.00.30, general (MFN) Free.

What is the duty on polyphosphoric acids?

Polyphosphoric acids are classified in 2809.20.00.40, general (MFN) Free.

How do I classify diphosphorus pentaoxide?

Diphosphorus pentaoxide is classified in 2809.10.00.00, general (MFN) Free.

Source: USITC Harmonized Tariff Schedule, retrieved October 22, 2026.

HTS 2809.20.00.20: Phosphoric acid / Fertilizer grade / Other, Free duty | HTSBase