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Code 2833 30 · Heading 2833

Alums

This code covers alums. It is separate from the listed sodium, magnesium, aluminium, nickel, copper, barium and other sulfates, and from persulfates.

For example

  • Alum crystals
  • Alum powder
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See the official tariff text

Official tariff text

Alums

Full 8-digit codes

Pick the description that best matches your product.

1 code below this one

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Classification decides the rate here: from 3.2% to 5.5%.

Export to Norway

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

  • 28.33.3000

    Alums

    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.

  • 2833 30 00 00

    Alums

    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 10 codes at this level
Previous code 2833 29

Sulphates (excl. of sodium, magnesium, aluminium, nickel, copper, bar…
you are here 2833 30

Alums

Next code 2833 40

Peroxosulphates "persulphates"

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.