2811
4-digit headingOther inorganic acids and other inorganic oxygen compounds of nonmetals
This is a 4-digit heading — a category, not a filing code. Pick the more specific code beneath it that best matches your goods; only a 10-digit statistical code can be used on a customs entry.
Duty rates
No rate is published at this level — check the specific 10-digit statistical code beneath it.
| Rate | Value and what it means |
|---|---|
| General rate (Column 1) | See 10-digit codeColumn 1 general Applies to most trading partners — the standard "normal trade relations" rate. |
| Special rate (Column 1) | —Trade programs The country letters in parentheses are free trade agreement and preference programs. If your goods qualify under one of them, that rate replaces the general rate. |
| Column 2 rate | —Non-NTR Reserved for the small group of countries that do not have normal trade relations with the US (currently Cuba, North Korea, Russia and Belarus). Almost no importer uses this column — if you are shipping from anywhere else, ignore it. |
| Unit of quantity | — How CBP expects the quantity to be reported on the entry summary. |
Codes within Other inorganic acids and other inorganic oxygen compounds of nonmetals
17 more specific lines fall under 2811.
- 2811.11.00.00Hydrogen fluoride (Hydrofluoric acid)10-digit statistical codeOther inorganic acids and other inorganic oxygen compounds of nonmetals: > Other inorganic acids:Free
- 2811.12.00.00Hydrogen cyanide (hydrocyanic acid)10-digit statistical codeOther inorganic acids and other inorganic oxygen compounds of nonmetals: > Other inorganic acids:4.2%
- 2811.19Other6-digit headingOther inorganic acids and other inorganic oxygen compounds of nonmetals: > Other inorganic acids:
- 2811.19.10.00Arsenic acid10-digit statistical codeOther inorganic acids and other inorganic oxygen compounds of nonmetals: > Other inorganic acids: > Other:2.3%
- 2811.19.30.00Hydrobromic acid10-digit statistical codeOther inorganic acids and other inorganic oxygen compounds of nonmetals: > Other inorganic acids: > Other:Free
- 2811.19.61Other8-digit subheadingOther inorganic acids and other inorganic oxygen compounds of nonmetals: > Other inorganic acids: > Other:4.2%
- 2811.19.61.10Sulfamic acid10-digit statistical codeOther inorganic acids and other inorganic oxygen compounds of nonmetals: > Other inorganic acids: > Other: > Other
- 2811.19.61.90Other10-digit statistical codeOther inorganic acids and other inorganic oxygen compounds of nonmetals: > Other inorganic acids: > Other: > Other
- 2811.21.00.00Carbon dioxide10-digit statistical codeOther inorganic acids and other inorganic oxygen compounds of nonmetals: > Other inorganic oxygen compounds of nonmetals:3.7%
- 2811.22Silicon dioxide6-digit headingOther inorganic acids and other inorganic oxygen compounds of nonmetals: > Other inorganic oxygen compounds of nonmetals:
- 2811.22.10.00Synthetic silica gel10-digit statistical codeOther inorganic acids and other inorganic oxygen compounds of nonmetals: > Other inorganic oxygen compounds of nonmetals: > Silicon dioxide:3.7%
- 2811.22.50.00Other10-digit statistical codeOther inorganic acids and other inorganic oxygen compounds of nonmetals: > Other inorganic oxygen compounds of nonmetals: > Silicon dioxide:Free
- 2811.29Other6-digit headingOther inorganic acids and other inorganic oxygen compounds of nonmetals: > Other inorganic oxygen compounds of nonmetals:
- 2811.29.10.00Arsenic trioxide10-digit statistical codeOther inorganic acids and other inorganic oxygen compounds of nonmetals: > Other inorganic oxygen compounds of nonmetals: > Other:Free
- 2811.29.20.00Selenium dioxide10-digit statistical codeOther inorganic acids and other inorganic oxygen compounds of nonmetals: > Other inorganic oxygen compounds of nonmetals: > Other:Free
- 2811.29.30.00Sulfur dioxide10-digit statistical codeOther inorganic acids and other inorganic oxygen compounds of nonmetals: > Other inorganic oxygen compounds of nonmetals: > Other:4.2%
- 2811.29.50.00Other10-digit statistical codeOther inorganic acids and other inorganic oxygen compounds of nonmetals: > Other inorganic oxygen compounds of nonmetals: > Other:3.7%
Chapter 28: Inorganic Chemicals; Compounds of Precious Metals and Rare-Earths
Browse every code in this chapter to compare neighbouring classifications.
View Chapter 28Source: USITC Harmonized Tariff Schedule, 2026 Basic Edition, Revision 16. Rate text is reproduced verbatim from the official export; category paths and duty estimates are derived.
Data loaded August 18, 2026.Check this chapter on hts.usitc.govReport an error with this codeHow this data is built