Code 3104 90 · Heading 3104

Other potassium fertilisers, potassium salts and mixtures, not tablets or similar and not in packages of gross weight <= 10 kg

This code covers raw natural potassium salts such as carnallite and sylvinite, potassium magnesium sulfate, and mixtures of potassium fertilisers such as potassium chloride mixed with potassium sulfate. The products must not be in tablet or similar form and must not be in packages of gross weight <= 10 kg.

For example

Raw carnallite, not in tablet or similar form and not in a package of gross weight <= 10 kg
Raw sylvinite, not in tablet or similar form and not in a package of gross weight <= 10 kg
Potassium magnesium sulfate, not in tablet or similar form and not in a package of gross weight <= 10 kg
A mixture of potassium chloride and potassium sulfate, not in tablet or similar form and not in a package of gross weight <= 10 kg

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See the official tariff text

Official tariff text

Carnallite, sylvite and other crude natural potassium salts, potassium magnesium sulphate and mixtures of potassic fertilisers, e.g. mixtures of potassium chloride and potassium sulphate (excl. those in tablets or similar forms, or in packages with a gross weight of <= 10 kg)

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 31 Fertilisers 4 of 11 chapters in section VI
What type of fertilizer is it: animal or vegetable; nitrogen-based; phosphorus-based; potassium-based; or a fertilizer containing two or three of nitrogen, phosphorus and potassium, another fertilizer, or one in tablet form or similar form or in a package with a gross weight <= 10 kg?
✓
Step 3 · Heading 3104 Mineral or chemical potassic fertilisers (excl. tho… 4 of 5 headings under chapter 31
Is it potassium chloride, potassium sulfate, or carnallite, sylvinite, another raw natural potassium salt, potassium magnesium sulfate, or a mixture of potassium fertilisers such as potassium chloride and potassium sulfate?
✓
Step 4 · Subheading 3104 90 Carnallite, sylvite and other crude natural potassi… 3 of 3 subheadings under heading 3104
Is the product raw carnallite, raw sylvinite, another raw natural potassium salt, potassium magnesium sulfate, or a mixture of potassium fertilisers such as potassium chloride and potassium sulfate, rather than a product specifically named as potassium chloride or potassium sulfate?

Full 8-digit codes

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1 code below this one

3104 90 00 Carnallite, sylvite and other crude natural potassium salts, potassium magnesium sulphate and mixtures of potassic fertilisers, e.g. mixtures of potassium chloride and potassium sulphate (excl. those in tablets or similar forms, or in packages with a gross weight of <= 10 kg) Duty free Save

Compare the sibling codes

3104 20 Potassium chloride for use as fertiliser (excl. that in tablets or similar forms, or in packages with a gross weight of <= 10 kg) No rate on file
3104 30 Potassium sulphate (excl. that in tablets or similar forms, or in packages with a gross weight of <= 10 kg) 0.0%
3104 90 Carnallite, sylvite and other crude natural potassium salts, potassium magnesium sulphate and mixtures of potassic fertilisers, e.g. mixtures of potassium chloride and potassium sulphate (excl. those in tablets or similar forms, or in packages with a gross weight of <= 10 kg) you are here 0.0%

Export to Norway

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

31.04.9000

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.

3104 90 00 00

Other

Ordinary duty

Duty free

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 3 codes at this level

Previous code 3104 30

Potassium sulphate (excl. that in tablets or similar forms, or in pac…

you are here 3104 90

Carnallite, sylvite and other crude natural potassium salts, potassiu…

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.