Chapter 28 · Inorganic chemicals · Section 6
HS Code 2811.22
Silicon dioxide
Heading 2811: Other inorganic acids and other inorganic oxygen compounds of nonmetals
US HTS + UK Tariff v4.0.1633 · updated 2026-10-21 · sources
Rates on this page are the official published schedule rates, shown for information. This is not a customs ruling: preference programs, Section 232/301 surcharges and per-shipment fees can change what you actually pay.
United States - HTS lines under 2811.22
Source: official Harmonized Tariff Schedule (USITC). "General" is the normal-trade-relations rate; "Special" lists preference programs; "Other" is the column-2 rate. Additional Section 232/301 duties may apply on top.
| HTS code | Description | General | Special | Other | Unit |
|---|---|---|---|---|---|
| 2811.22.10 |
Silicon dioxide > Synthetic silica gel |
3.7% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | kg |
| 2811.22.50 |
Silicon dioxide > Other |
Free | - | Free | kg |
Estimate the US duty runs in your browser · no caps
Enter the customs value (and quantity, when a rate is per-unit) to estimate the general-rate duty per HTS line. Estimates exclude Section 232/301 surcharges, MPF/HMF and fees. Not a customs ruling.
European Union - CN codes under 2811.22
Source: EU Combined Nomenclature (Eurostat, © European Union, reused per Decision 2011/833/EU). Duty rates and measures live in TARIC; each code links to the official consultation.
| CN code | Description | |
|---|---|---|
| 2811 22 00 | Silicon dioxide | EU duty (TARIC) → |
United Kingdom - commodity codes under 2811.22
Source: UK Integrated Online Tariff (Open Government Licence v3.0). Declarable 10-digit codes go on the customs declaration; check the official page for the current duty and VAT measures.
| Commodity code | Description | |
|---|---|---|
| 2811 22 00 00 | Silicon dioxide | UK duty & VAT → |
| 2811 22 00 15 | Amorphous silicon dioxide (CAS RN 60676-86-0),<br> <br><br><br>- in the form of powder<br> <br><br><br>- of a purity by weight of 99,0 % or more<br> <br><br><br>- with a median grain size of 0,7 μm or more, but not more than 2,1 μm<br> <br><br><br>- where 70 % of the particles have a diameter of not more than 3 μm<br> | UK duty & VAT → |
| 2811 22 00 90 | Other | UK duty & VAT → |
Nearby codes in heading 2811
The subheadings immediately before and after 2811.22 in chapter 28.
Sources: U.S. International Trade Commission, Harmonized Tariff Schedule (public domain) · EU Combined Nomenclature © European Union, Eurostat (Decision 2011/833/EU) · UK Integrated Online Tariff, contains public sector information licensed under the Open Government Licence v3.0. Data refreshed weekly. Details on About & Data Sources.
Frequently asked questions
Common questions about HS code 2811.22.
What is HS code 2811.22?
HS code 2811.22 covers: Silicon dioxide. It belongs to chapter 28 (Inorganic chemicals) of the Harmonized System.
What is the US import duty for HS code 2811.22?
The US general (normal trade relations) rates under this subheading range: Free - 3.7%. Preference programs and Section 232/301 surcharges can change the effective rate; see the HTS lines for detail.
What is the UK commodity code for 2811.22?
The UK extends 2811.22 to 3 declarable 10-digit commodity codes, starting with 2811220000. The full code goes on the UK customs declaration.