Code 3913 10 · Heading 3913

Unprocessed alginic acid, its salts and esters

This code covers alginic acid, its salts and its esters in unprocessed form. It is separate from other natural or modified polymers in unprocessed form.

For example

Unprocessed alginic acid
Unprocessed salts of alginic acid
Unprocessed esters of alginic acid

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See the official tariff text

Official tariff text

Alginic acid, its salts and esters, in primary forms

The path to this code

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

Step 4 of 4

Step 1 · Section VII Plastics and articles thereof; rubber and articles …
Is the product made of plastic, or is it made of rubber?
✓
Step 2 · Chapter 39 Plastics and articles thereof 1 of 2 chapters in section VII
What kind of plastic product is it: an unworked polymer or ion exchanger, plastic waste, a monofilament, rod or profile, a pipe or hose, a floor or wall covering, a flat plastic form, a sanitary item, a transport or packaging item, a household or toilet item, building equipment, or another plastic article?
✓
Step 3 · Heading 3913 Natural polymers, e.g. alginic acid, and modified n… 13 of 26 headings under chapter 39
Is it alginic acid, a salt of alginic acid or an ester of alginic acid?
✓
Step 4 · Subheading 3913 10 Alginic acid, its salts and esters, in primary forms 1 of 2 subheadings under heading 3913
Is it alginic acid, a salt of alginic acid or an ester of alginic acid, in unprocessed form?

Full 8-digit codes

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1 code below this one

3913 10 00 Alginic acid, its salts and esters, in primary forms 5.0% Save

Compare the sibling codes

3913 10 Alginic acid, its salts and esters, in primary forms you are here 5.0%
3913 90 Natural polymers and modified natural polymers, e.g. hardened proteins, chemical derivatives of natural rubber, n.e.s., in primary forms (excl. alginic acid and its salts and esters) 6.5%

Export to Norway

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

39.13.1000

Alginic acid, its salts and esters

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.

All 2 UK lines under this code

They all have the same duty rates shown here.

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. 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 2 codes at this level

you are here 3913 10

Alginic acid, its salts and esters, in primary forms

Next code 3913 90

Natural polymers and modified natural polymers, e.g. hardened protein…

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.