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HTS 2809Chapter 28

HTS 2809Diphosphorus pentaoxide; phosphoric acid;polyphosphoric acids, whether or not chemically defined: Duty Rate & Import Guide

Inorganic Chemicals · 1 court case · $37.2M monthly imports · 100% from 1 countries · Updated daily from USITC

Duty Rates

General

Free

Special

Free

Column 2

Free

Trade Agreement Eligibility

CUSMAKORUS

Trade Intelligence

Monthly Imports

$37.2M

2026-01

Trade Concentration

100%

from top 3 of 1 origins

Regulatory Pressure

LOW

1 rulings — · 0 reg · 0 CIT, 1 CAFC

Global Rates

🇺🇸 Free

🇬🇧 United Kingdom: N/A · 🇪🇺 European Union: N/A · 🇨🇦 Canada: N/A · 🇧🇷 Brazil: N/A

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Data compiled from USITC HTS, US Census Bureau, CBP CROSS Rulings, CourtListener · As of 2026-04-28 · Updates monthly

Supply Chain Risk

100% of US imports for this code come from just 1 countries. High origin concentration increases exposure to trade disruptions or tariff escalations.

Trade Remedy

Additional Tariffs Apply

Section 301 — China Tariffs+25%

List 2 — ~$16B of Chinese goods (semiconductors, chemicals, plastics)

Active — 7.5%–25% additional duties on Chinese-origin goods across four tranches (Lists 1–4A), with higher 2024/2025 increases on targeted product categories.

Effective 2018-07-06

These additional tariffs apply on top of the general duty rate. View full trade remedy tracker →

Subheadings (6)

CodeDescriptionRate
2809.10.00.00Diphosphorus pentaoxideFree
2809.20.00Phosphoric acid and polyphosphoric acidsFree
2809.20.00.10Containing less than 65 percent available diphosphorus pentaoxide (P<sub>2</sub>O<sub>5</sub>) equivalents
2809.20.00.20Other
2809.20.00.30Other
2809.20.00.40Polyphosphoric acids

CBP Rulings (1)

N243666Classification

The tariff classification of various inorganic chemicals from China

Court of International Trade & Federal Circuit (1)

Matching Export Code (Schedule B)

2809100000Schedule B

DIPHOSPHORUS PENTAOXIDE

Census Bureau export classification matching this HTS import code.

2805.40.00.002809.10.00.00