# United States tariff lines under HS 2811.22

> The United States tariff splits HS 2811.22 (other inorganic oxygen compounds of non-metals: Silicon dioxide) into 2 national lines: 2811.22.10.00 (synthetic silica gel) and 2811.22.50.00 (other). The general (MFN) duty differs by line: 3.7% on 2811.22.10.00 and free on 2811.22.50.00.

Source: https://border.bot/countries/united-states/hs-codes/281122
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 28](https://border.bot/countries/united-states/hs-codes/28) / [2811.22](https://border.bot/countries/united-states/hs-codes/281122)

## Key facts

- HS subheading: [2811.22](https://border.bot/hs-codes/281122)
- National lines: 2
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes

## United States lines under 2811.22

The United States tariff splits HS 2811.22 (other inorganic oxygen compounds of non-metals: Silicon dioxide) into 2 national lines: 2811.22.10.00 (synthetic silica gel) and 2811.22.50.00 (other).

The general (MFN) duty differs by line: 3.7% on 2811.22.10.00 and free on 2811.22.50.00.

- [2811.22.10.00](https://border.bot/countries/united-states/hs-codes/2811221000) Other inorganic oxygen compounds of nonmetals, Silicon dioxide, Synthetic silica gel. Duty (MFN): 3.7%
- [2811.22.50.00](https://border.bot/countries/united-states/hs-codes/2811225000) Other inorganic oxygen compounds of nonmetals, Silicon dioxide, Other. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 2811.22 yet.

- [The Harmonized System text for 2811.22](https://border.bot/hs-codes/281122)

- Previous subheading: [2811.21](https://border.bot/countries/united-states/hs-codes/281121) Other inorganic acids and other inorganic oxygen compounds of nonmetals
- Next subheading: [2811.29](https://border.bot/countries/united-states/hs-codes/281129) Other

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2811.22?

The United States tariff splits HS 2811.22 (other inorganic oxygen compounds of non-metals: Silicon dioxide) into 2 national lines: 2811.22.10.00 (synthetic silica gel) and 2811.22.50.00 (other).

### What is the duty on HS 2811.22 in the United States?

The general (MFN) duty differs by line: 3.7% on 2811.22.10.00 and free on 2811.22.50.00.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/281122.json