Code 2815 12 · Heading 2815

Sodium hydroxide in aqueous solution (caustic soda lye)

This code covers sodium hydroxide in an aqueous solution, also called caustic soda lye. It does not cover sodium hydroxide in solid form or potassium hydroxide.

For example

Aqueous sodium hydroxide solution
Caustic soda lye

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See the official tariff text

Official tariff text

Sodium hydroxide "caustic soda" in aqueous solution "soda lye or liquid soda"

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 2815 Sodium hydroxide "caustic soda", potassium hydroxid… 15 of 50 headings under chapter 28
Is it solid sodium hydroxide, sodium hydroxide in an aqueous solution, potassium hydroxide, or a peroxide of sodium or potassium?
✓
Step 4 · Subheading 2815 12 Sodium hydroxide "caustic soda" in aqueous solution… 2 of 4 subheadings under heading 2815
Is it sodium hydroxide in an aqueous solution?

Full 8-digit codes

Pick the description that best matches your product.

1 code below this one

2815 12 00 Sodium hydroxide "caustic soda" in aqueous solution "soda lye or liquid soda" 5.5% Save

Compare the sibling codes

2815 11 Sodium hydroxide "caustic soda" solid 5.5%
2815 12 Sodium hydroxide "caustic soda" in aqueous solution "soda lye or liquid soda" you are here 5.5%
2815 20 Potassium hydroxide "caustic potash" 5.5%
2815 30 Peroxides of sodium or potassium 5.5%

Export to Norway

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

28.15.1200

In aqueous solution (soda lye or liquid soda)

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. 9, 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.

2815 12 00 00

In aqueous solution (soda lye or liquid soda)

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. 9, 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 4 codes at this level

Previous code 2815 11

Sodium hydroxide "caustic soda" solid

you are here 2815 12

Sodium hydroxide "caustic soda" in aqueous solution "soda lye or liqu…

Next code 2815 20

Potassium hydroxide "caustic potash"

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.