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Customs code · HS subheading 3911 90

Final code reached

Other chemically synthesised plastics

(Polymers and prepolymers), not otherwise specified, in unworked form, excluding the listed special types

This is a complete 8-digit customs code. Exports and Intrastat use it as it is. For an import into the EU, pick a 10-digit line below.

This code covers chemically synthesised polymers and prepolymers in unworked form that are not otherwise specified. It excludes the specifically named polymers and solutions listed under neighbouring codes.

For example

  • An unworked chemically synthesised polymer, not a named special polymer or solution covered by a neighbouring code
  • An unworked chemically synthesised prepolymer, not a named special polymer or solution covered by a neighbouring code
See the official tariff text

Official tariff text

Polymer and prepolymer plastics produced by chemical synthesis, n.e.s., in primary forms (excl. copolymer of p-cresol and divinylbenzene in the form of a solution in N,N-dimethylacetamide containing by weight >= 50% of polymer, hydrogenated copolymers of vinyltoluene and alfa-methylstyrene, and poly(1,3-phenylene methylphosphonate))

You are seeing what applies when you export from the EU. Switch above if you import.

You are seeing what applies when you import into the EU. Switch above if you export.

Your answer for export

The full EU export code is 3911 90 99.

You do not pick a 10-digit EU import line for an export declaration or Intrastat. The destination classifies the goods under its own tariff.

8 digits, ready

Selling to Norway, Great Britain and the United States

What they charge on arrival.

Norway, Great Britain and the United States use their own tariff lines under the 6-digit HS code. The rates below are what their customs charge on goods arriving from the EU. Match the goods against each country's own wording before you rely on a rate.

Norway

Duty free

  • Their lines2 Norwegian lines

39.11.9010 Condensation, polycondensation and polyaddition products

Norwegian tariff data checked Sept. 13, 2026.

Great Britain

The rate depends on the line.

  • Their lines16 British lines

3911 90 99 10 For cavity filling, for use in certain types of aircraft

Northern Ireland follows other rules.

UK tariff data checked Sept. 13, 2026.

United States

10.0%

Estimated from published US measures

  • Their lines8 US lines
  • Entry dateSept. 18, 2026

3911.90.10.00 Petroleum resins, coumarone-indene resins, polyterpenes, polysulfides, polysulfones

The US importer of record files the entry.

US tariff data checked Sept. 16, 2026.

See the 2 Norwegian lines

Selling to Norway

Norway splits the 6-digit category its own way, so these are Norway's own lines under it, not this EU code. Check your product against their wording; what Norwegian customs charges is shown per line.

  • 39.11.9010

    Condensation, polycondensation and polyaddition products

    Ordinary duty
    Duty free

  • 39.11.9090

    Other

    Ordinary duty
    Duty free

Norwegian tariff data version 1.5/1.2, last checked Sept. 13, 2026.

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

See the 16 British lines

Selling to Great Britain

What UK customs charges when goods like these arrive in Great Britain.

  • 3911 90 99 10

    For cavity filling, for use in certain types of aircraft

    Ordinary duty
    Duty free

  • 3911 90 99 23

    Aqueous solution consisting of by weight 25 % or more, but not more than 40 % of a poly(isobutylene-maleic anhydride) modified with: -N,N-dimethylpropane-1,3-diamine, -a copolymer of ethylene oxide and propylene oxide, having aminopropyl and methoxy end-groups, -ethanol (CAS RN 497926-97-3)

    Ordinary duty
    Duty free

  • 3911 90 99 25

    Copolymer of vinyltoluene and α-methylstyrene

    Ordinary duty
    Duty free

  • 3911 90 99 35

    Alternated copolymer of ethylene and maleic anhydride (EMA)

    Ordinary duty
    Duty free

  • 3911 90 99 38

    Mixture containing by weight: -90 % (± 1 %) of 1,4:5,8- Dimethanonaphthalene, 2-ethylidene-1,2,3,4,4a,5,8,8a-octahydro-,polymer with 3a,4,7,7a- tetrahydro- 4,7-methano-1H-indene, hydrogenated (CAS RN 881025-72-5), and -10 % (± 1 %) of a hydrogenated styrene butadiene copolymer (CAS RN 66070-58-4)

    Ordinary duty
    Duty free

  • 3911 90 99 40

    Mixed calcium and sodium salt of a copolymer of maleic acid and methyl vinyl ether, having a calcium content of 9 % or more but not more than 16 % by weight

    Ordinary duty
    Duty free

  • 3911 90 99 43

    Copolymer of α-methylstyrene and styrene, having a softening point of more than 113 ºC

    Ordinary duty
    Duty free

  • 3911 90 99 45

    Copolymer of maleic acid and methyl vinyl ether

    Ordinary duty
    Duty free
Show all 16 lines

  • 3911 90 99 48

    Mixture containing by weight: -90 % (± 1 %) of 1,4:5,8- Dimethanonaphthalene, 2-ethylidene-1,2,3,4,4a,5,8,8a-octahydro-,polymer with 3a,4,7,7a- tetrahydro- 4,7-methano-1H-indene, hydrogenated (CAS RN 881025-72-5), and -10 % (± 1 %) of an ethylene-propylene copolymer (CAS RN 9010-79-1)

    Ordinary duty
    Duty free

  • 3911 90 99 60

    Copolymer of styrene with maleic anhydride, either partially esterified or completely chemically modified, in flake or powder form

    Ordinary duty
    Duty free

  • 3911 90 99 63

    Mixture, containing by weight: - 20% or more but not more than 40% of a copolymer of methyl vinyl ether and monobutyl maleate (CAS RN 25119-68-0), - 7% or more but not more than 20% of a copolymer of methyl vinyl ether and monoethyl maleate (CAS RN 25087-06-3), - 40% or more, but not more than 65% of ethanol (CAS RN 64-17-5), - 1% or more but not more than 7% of butan-1-ol (CAS RN 71-36-3)

    Ordinary duty
    Duty free

  • 3911 90 99 65

    Calcium zinc salt of a copolymer of maleic acid and methyl vinyl ether

    Ordinary duty
    Duty free

  • 3911 90 99 70

    Aqueous solution containing by weight: - 30 % or more but not more than 40 % of poly-4-vinylpyridine-N-oxide, - 0,1 % or more but not more than 4 % of isonicotinic acid-N-oxide, - 0,1 % or more but not more than 3,5 % of sodium sulphate, - 0,1 % or more but not more than 2 % of 4-acetylpyridine-N-oxide

    Ordinary duty
    Duty free

  • 3911 90 99 73

    A mixture containing by weight: -89 % or more but not more than 91 % of 1,4:5,8-dimethanonaphthalene, 2-ethylidene-1,2,3,4,4a,5,8,8a-octahydro-, polymer with 3a,4,7,7a-tetrahydro-4,7-methano-1H-indene, hydrogenated (CAS RN 881025-72-5), and -9 % or more but not more than 11 % of polypropylene homopolymer (CAS RN 9003-07-0)

    Ordinary duty
    Duty free

  • 3911 90 99 86

    Copolymer of methyl vinyl ether and maleic acid anhydride (CAS RN 9011-16-9)

    Ordinary duty
    Duty free

  • 3911 90 99 90

    Other

    Ordinary duty
    Depends on the product details
    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 v4.0.1599, last checked Sept. 13, 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).

See the 8 US lines

Selling to the United States

What US customs charges when goods like these arrive from the EU. The US importer of record files the entry and pays the duty.

  • 3911.90.10.00

    Petroleum resins, coumarone-indene resins, polyterpenes, polysulfides, polysulfones and other products specified in note 3 to this chapter, not elsewhere specified or included, in primary forms, Other, Elastomeric

    General rate
    Free
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

  • 3911.90.15.00

    Petroleum resins, coumarone-indene resins, polyterpenes, polysulfides, polysulfones and other products specified in note 3 to this chapter, not elsewhere specified or included, in primary forms, Other, Containing monomer units which are aromatic or modified aromatic, or which are obtained, derived or manufactured in whole or in part therefrom, Thermoplastic, Poly(nitrilomethanetetraarylnitrilo- [2,4,6-tris-(1-methyethyl)-1,3- phenylene]]-2,6-bis(1-methylethyl)- phenyl]-ω-[[[2,6-bis(1-methylethyl)- phenyl]amino]methylene]amino carbodiimide or 2,4-diisocyanate-1,3,5-tris(1-methyl- ethyl) homopolymer with polyethylene

    General rate
    Free
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

  • 3911.90.25.00

    Petroleum resins, coumarone-indene resins, polyterpenes, polysulfides, polysulfones and other products specified in note 3 to this chapter, not elsewhere specified or included, in primary forms, Other, Containing monomer units which are aromatic or modified aromatic, or which are obtained, derived or manufactured in whole or in part therefrom, Thermoplastic, Other

    General rate
    6.1%
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

  • 3911.90.35.00

    Petroleum resins, coumarone-indene resins, polyterpenes, polysulfides, polysulfones and other products specified in note 3 to this chapter, not elsewhere specified or included, in primary forms, Other, Containing monomer units which are aromatic or modified aromatic, or which are obtained, derived or manufactured in whole or in part therefrom, Thermosetting, 1,1'-Bis(methylenedi-4,1-phenylene)- 1H-pyrrole-2,5-dione, copolymer with 4,4'-methylenebis(benzeneamine); and Hydrocarbon novolac cyanate ester

    General rate
    Free
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

  • 3911.90.45.00

    Petroleum resins, coumarone-indene resins, polyterpenes, polysulfides, polysulfones and other products specified in note 3 to this chapter, not elsewhere specified or included, in primary forms, Other, Containing monomer units which are aromatic or modified aromatic, or which are obtained, derived or manufactured in whole or in part therefrom, Thermosetting, Other

    General rate
    5.8%
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

  • 3911.90.70.00

    Petroleum resins, coumarone-indene resins, polyterpenes, polysulfides, polysulfones and other products specified in note 3 to this chapter, not elsewhere specified or included, in primary forms, Other, Chlorinated synthetic rubber

    General rate
    Free
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

  • 3911.90.91.10

    Petroleum resins, coumarone-indene resins, polyterpenes, polysulfides, polysulfones and other products specified in note 3 to this chapter, not elsewhere specified or included, in primary forms, Other, Thermoplastic

    General rate
    6.5%
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

  • 3911.90.91.50

    Petroleum resins, coumarone-indene resins, polyterpenes, polysulfides, polysulfones and other products specified in note 3 to this chapter, not elsewhere specified or included, in primary forms, Other, Thermosetting

    General rate
    6.5%
    From the EU
    10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

Worked out for an entry on Sept. 18, 2026.

US tariff schedule 2026HTSRev19, last checked Sept. 16, 2026.

Last change we recorded: Revision 19 (2026), Sept. 16, 2026.

Anti-dumping and countervailing duties, US import taxes and customs fees are not included.

The descriptions above are the US tariff texts, which the United States publishes in English only.

Source: the US International Trade Commission's Harmonized Tariff Schedule (hts.usitc.gov), public domain, and the measures published in the Federal Register.

This is a planning estimate from the US Harmonized Tariff Schedule (revision shown) and the published Federal Register measures as of the date shown, for a shipment of EU origin. It is not a customs entry, legal advice or a broker's opinion, and tariffs.help is not a US-licensed customs broker. The US importer of record or their broker confirms the classification, origin, value and the duty due before filing.

Before you use the code

Check the facts that sit outside the code

The code can be right while what you pay still changes, because of where the goods come from, when they arrive, or extra EU measures.

Classify your own product, free Look up the current rates and rules
  1. The product and its form Check that your product really matches this description, including what it is made of and the form it arrives in.
  2. Country of origin Trade agreements, sanctions and extra measures can change the treatment of the very same code.
  3. Current tariff measures Check today's rate, any restrictions or licences, and the quantity customs asks for, with Toldstyrelsen or TARIC.

On an EU import declaration

Pick the 10-digit line that matches the goods.

16 import lines

When these goods are imported into the EU, the declaration needs a 10-digit code. Under 3911 90 99 the EU tariff has 16 lines, each with its own wording.

You or your customs agent pick the line whose wording fits the goods; the last line, "Other", covers what none of the specific wordings describe.

Some lines depend on what the goods will be used for and need customs authorisation; matching the wording alone does not give a lower rate.

  1. Match the whole wording A line is its own wording plus the grouping text above it. Read both before you settle on one.
  2. Check the intended use On some lines the lower rate belongs to what the goods will be used for, not to the goods alone.
  3. Confirm the authorisation Where the lower rate carries conditions, customs asks for an authorisation before it can be used.

A suspension is a lower rate the EU grants for specific products; whether your goods qualify depends on the line's wording and conditions.

Exports from the EU and Intrastat normally use the 8-digit code as it is.

EU tariff data of Sept. 13, 2026.

This is the catch-all under 3911 90: it covers what the sibling codes below do not.

This is the remainder for other chemically synthesised polymers and prepolymers in unworked form within the parent group after the specifically named neighbouring types are excluded.

Rates, origin and documents

Read the signals first. Open only the ones you want to check.

Besides the ordinary duty, the EU records these kinds of measure against this code. They are listed as signals only: whether one applies to your goods can depend on where they come from, who produced them, the exact product and the documents you present. No amounts are worked out here.

Data of Sept. 1, 2026

Lower duty for goods from some countries

Possible

Preferential rates exist for goods originating in:

  • Andorra
  • San Marino
  • Türkiye
  • Comoros (excluding Mayotte), Madagascar, Mauritius, Seychelles and dependencies and Zimbabwe
  • Botswana, Eswatini, Lesotho, Mozambique and Namibia
  • Western Sahara
  • European Union, Iceland, Liechtenstein and Norway
  • Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua and Panama
  • +46 origins

These rates apply to Economic Partnership Agreements; CARIFORUM except Haiti; GSP-EBA (Special arrangement for the least-developed countries - Everything But Arms); GSP+ (incentive arrangement for sustainable development and good governance); OCTs (Overseas Countries and Territories); GSP - General arrangements except India.

Whether you can use one depends on the origin rules for the goods and on the documentation you can show.

Check this code in the official EU TARIC database

Restrictions and paperwork

Important

Import restrictions are recorded for goods originating in:

  • Ukraine
  • any country
  • North Korea (Democratic People’s Republic of Korea)
  • Belarus
  • Russian Federation

The EU records document conditions on this code. What customs may ask for depends on where the goods come from, exactly what the product is and the customs procedure.

Proof of origin 2 conditions

If you claim a lower rate for goods from a country the EU has a trade agreement with, customs asks for proof of origin, for example a EUR.1 certificate or an origin declaration.

Show the EU's own wording for these conditions
  • Invoice declaration or origin declaration made out by any exporter on invoice or any other commercial document
  • Movement certificate EUR.1

Sanctions and restricted regions 5 conditions

Some conditions come from EU sanctions rules. They matter when the goods are linked to a country or region the EU restricts trade with.

Show the EU's own wording for these conditions
  • Goods not originating from or destined to Crimea or Sevastopol (Articles 2 and 2b.1 of Council Regulation (EU) No 692/2014)
  • Goods not originating from or not destined for the non-government controlled areas of Ukraine in the oblasts of Donetsk, Kherson, Luhansk and Zaporizhzhia
  • The prohibitions defined in article 1aa.1 of Council Regulation (EC) No 765/2006 do not apply (see exemptions in article 1aa.2a)
  • The prohibitions defined in article 1aa paragraph 1 of Council Regulation (EC) No 765/2006 do not apply (see contractual exemptions in article 1aa paragraph 2b)
  • The prohibitions defined in article 4 paragraph 1 of Council Regulation (EU) No 833/2014 do not apply (see exemptions in article 4 paragraph 2)

Product controls and permits 1 condition

Depending on the exact product, customs may ask for a licence, a permit or a control certificate before the goods are released.

Show the EU's own wording for this condition
  • Notification document as mentioned in Regulation (EU) 2024/1157 - Article 5 and Annex IA

Statements that the goods are outside a rule's scope 4 conditions

Some conditions are statements that a rule does not cover the goods, for example that the product is not on a controlled list.

Show the EU's own wording for these conditions
  • Products and equipment, including parts (excluding military and repair exemption) listed in Annex IV containing F-gases or relies upon F-gases not subject to prohibition as imposed by Article 11.1. (Reg 2024/573).
  • Goods other than those falling under the applicable provisions of Regulation (EU) 2024/573
  • Goods other than those described in the footnotes linked to the measure
  • Goods other than those described in the Common Military List of the European Union

Other conditions 7 conditions

These conditions match none of the groups above. Whether customs asks for one depends on the goods, where they come from and the customs procedure.

Show the EU's own wording for these conditions
  • Undertaking registered in the F-Gas Portal according to Article 20 of Regulation (EU) 2024/573
  • Net mass of fluorinated greenhouse gases charged in products and equipment
  • Tonnes of CO₂ equivalent of bulk gases and of gases contained in products or equipment, and parts thereof
  • Goods labelled according to the provisions of Article 12 of Regulation (EU) 2024/573
  • Information document accompanying shipments of waste as mentioned in Regulation (EU) 2024/1157 – Article 18 and Annex VII
  • Product not subjected to the provisions of Regulation (EU) 2024/1157
  • Movement document as mentioned in Regulation (EU) 2024/1157 – Article 5 and Annex IB
Check this code in the official EU TARIC database

EU tariff measure data of Sept. 1, 2026.

One last classification check

Check the path and the nearest alternatives.

Use this view if you are still unsure the code describes the product precisely.

How we got to this code

  1. VII
  2. 39
  3. 3911
  4. 3911 90
  5. 3911 90 99
Show the steps

Compare with the codes next to it.

Compare the sibling codes at this level before you settle on this one.

Worth comparing

Codes that sit close to this one, for when the material itself could be different.

Browse chapter 39

Similar products elsewhere in the tariff

Often confused with

Duty rates shown here are estimates, read from official EU / Danish, Norwegian and UK tariff data for orientation only. Confirm the current rate with Toldstyrelsen, 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.