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HTS 2811Chapter 28

HTS 2811Other inorganic acids and other inorganic oxygen compounds of nonmetals: Duty Rate & Import Guide

Inorganic Chemicals · 1 pending regulation · 1 court case · $59.3M 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

$59.3M

2026-01

Trade Concentration

100%

from top 3 of 1 origins

Regulatory Pressure

LOW

2 rulings — · 1 reg · 0 CIT, 1 CAFC

Global Rates

🇺🇸 Free

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

Compare All →

Data compiled from USITC HTS, US Census Bureau, CBP CROSS Rulings, Federal Register, CourtListener · As of 2026-04-30 · Updates monthly

Active DisputesRecent court cases or pending regulations affect this code
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 (17)

CodeDescriptionRate
2811.11.00.00Hydrogen fluoride (Hydrofluoric acid)Free
2811.12.00.00Hydrogen cyanide (hydrocyanic acid)4.2%
2811.19Other:
2811.19.10.00Arsenic acid2.3%
2811.19.30.00Hydrobromic acidFree
2811.19.61Other4.2%
2811.19.61.10Sulfamic acid
2811.19.61.90Other
2811.21.00.00Carbon dioxide3.7%
2811.22Silicon dioxide:
2811.22.10.00Synthetic silica gel3.7%
2811.22.50.00OtherFree
2811.29Other:
2811.29.10.00Arsenic trioxideFree
2811.29.20.00Selenium dioxideFree
2811.29.30.00Sulfur dioxide4.2%
2811.29.50.00Other3.7%

CBP Rulings (2)

I89013Classification

The tariff classification of Kromasil SIL from Sweden

N311593Classification

The tariff classification of “CO2 propellant cartridges” from China

Federal Register (1)

Court of International Trade & Federal Circuit (1)

Matching Export Code (Schedule B)

2811110000Schedule B

HYDROGEN FLUORIDE (HYDROFLUORIC ACID)

Census Bureau export classification matching this HTS import code.

2810.00.00.002811.11.00.00