# 280920 — Diphosphorus pentaoxide; phosphoric acid; polyphosphoric acids, whether or not…: Phosphoric acid and polyphosphoric acids

HS code 280920 classifies Diphosphorus pentaoxide; phosphoric acid; polyphosphoric acids, whether or not…: Phosphoric acid and polyphosphoric acids. It belongs to Chapter 28 (Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes) of Section VI (Products of the chemical or allied industries) of the Harmonized System. Duty rates are recorded for 1 country.

> Section VI · Products of the chemical or allied industries
> Chapter 28 · Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes

**HS code:** `280920`

## Description

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

## Duty rates

| Country | Rate | Programme |
| --- | --- | --- |
| US United States | 0% | MFN |

Rates effective as of 2026-01-01.

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Source: https://hscode.eximagent.ai/28/280920
Last updated: 2026-06-03
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