Code 2811 29 · Heading 2811

Inorganic oxides of non-metals, excluding diphosphorus pentoxide, boron oxides, carbon dioxide, silicon dioxide and sulfur dioxide

This covers inorganic oxides of non-metals. It excludes diphosphorus pentoxide, boron oxides, carbon dioxide, silicon dioxide and sulfur dioxide.

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Official tariff text

Inorganic oxygen compounds of non-metals (excl. diphosphorus pentaoxide, oxides of boron, carbon dioxide and silicon dioxide)

The path to this code

Every code is reached through these choices, one level at a time.

Step 4 of 4

Step 1 · Section VI Products of the chemical or allied industries
Is it an inorganic or organic chemical; a pharmaceutical product; a fertilizer; a tanning or dye extract, pigment, paint, varnish, filler or printing ink; an essential oil, perfume, cosmetic or toilet product; soap, a surface-active, washing, cleaning, polishing or wax product; a protein, modified starch, glue or enzyme; an explosive, pyrotechnic article, match or other specified combustible material; a photographic or cinematographic product; or another chemical product?
✓
Step 2 · Chapter 28 Inorganic chemicals; organic or inorganic compounds… 1 of 11 chapters in section VI
Which named chemical or chemical family best describes the product—for example a metal, acid, oxide, salt, isotope, compound or another substance listed under this category?
✓
Step 3 · Heading 2811 Inorganic acids and inorganic oxygen compounds of n… 11 of 50 headings under chapter 28
Is the product hydrogen fluoride, hydrogen cyanide, another inorganic acid, carbon dioxide, silicon dioxide, or another non-metal oxide?
✓
Step 4 · Subheading 2811 29 Inorganic oxygen compounds of non-metals (excl. dip… 6 of 6 subheadings under heading 2811
Is it sulfur dioxide; sulfur trioxide or diarsenic trioxide; a nitrogen oxide; or another inorganic oxide of a non-metal?

Full 8-digit codes

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4 codes below this one

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Classification decides the rate here: from 0.0% to 5.5%.

2811 11 Hydrogen fluoride "hydrofluoric acid" 5.5%
2811 12 Hydrogen cyanide "hydrocyanic acid" 5.3%
2811 19 Inorganic acids (excl. hydrogen chloride "hydrochloric acid", chlorosulphuric acid, sulphuric acid, oleum, nitric acid, sulphonitric acids, phosphoric acid, polyphosphoric acids, boric acids, hydrogen fluoride "hydrofluoric acid" and hydrogen cyanide "hydrocyanic acid") 0.0–5.3%
2811 21 Carbon dioxide 5.5%
2811 22 Silicon dioxide 4.6%
2811 29 Inorganic oxygen compounds of non-metals (excl. diphosphorus pentaoxide, oxides of boron, carbon dioxide and silicon dioxide) you are here 4.6–5.5%

Export to Norway

What Norwegian customs charges when goods like these are imported into Norway.

28.11.2900

Other

Ordinary duty

Duty free

Goods of EU origin

Duty free You need documentation of EU origin to use this rate.

Norwegian tariff data version 1.5/1.2, last checked Aug. 3, 2026.

Contains data from Norwegian Customs (data.toll.no), licensed under CC BY 4.0, adapted for display.

Export to the United Kingdom

What UK customs charges when goods like these are imported into the UK.

All 7 UK lines under this code

They all have the same duty rates shown here.

Ordinary duty

4.0%

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.

These rates apply in Great Britain. Different rules may apply for goods entering Northern Ireland.

UK tariff data version v4.0.1576, last checked Aug. 3, 2026.

Contains public sector information licensed under the Open Government Licence v3.0.

Source: UK Department for Business and Trade (data.api.trade.gov.uk).

Check the neighbouring codes

The codes just before and after this one, in case a nearby group fits better.

See all 6 codes at this level

Previous code 2811 22

Silicon dioxide

you are here 2811 29

Inorganic oxygen compounds of non-metals (excl. diphosphorus pentaoxi…

Duty rates shown here are estimates, read from official EU / Danish, Norwegian and UK tariff data for orientation only. Confirm the current rate with SKAT, TARIC, Norwegian Customs or the UK Online Trade Tariff before you file. The rate you pay can also depend on the country of origin. These are base customs duties only: import VAT, excise duties, anti-dumping duties and safeguard or quota measures are not included.