Code 2932 99 00 · Subheading 2932 99

Final code reached

Other heterocyclic compounds containing only oxygen atoms, excluding non-fused furan-ring compounds, lactones and the specifically listed substances

This is a complete 8-digit customs code. There is no further code choice to make below it.

This code covers heterocyclic compounds whose heteroatoms are oxygen only. It excludes compounds with a non-fused furan ring, including hydrogenated forms, as well as lactones, isosafrole, 1-[1,3-benzodioxol-5-yl]propan-2-one, piperonal, safrole, tetrahydrocannabinols, carbofuran and inorganic or organic mercury components.

For example

1,4-dioxane
1,3-dioxolane

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See the official tariff text

Official tariff text

Heterocyclic compounds with oxygen hetero-atom[s] only (excl. compounds containing unfused furan ring, whether or not hydrogenated, in the structure, and lactones, isosafrole, 1-[1,3-benzodioxol-5-yl]propan-2-one, piperonal, safrole, tetrahydrocannabinols "all isomers", carbofuran, and inorganic or organic compounds of mercury)

The path to this code

Every level is settled. Open an earlier step if you need to change a choice.

Step 5 of 5 · Complete

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 29 Organic chemicals 2 of 11 chapters in section VI
What type of organic chemical is it—for example, a hydrocarbon, alcohol, acid, nitrogen compound, sulfur compound, heterocyclic compound, vitamin, hormone, glycoside, plant alkaloid, sugar, antibiotic or another listed organic compound?
✓
Step 3 · Heading 2932 Heterocyclic compounds with oxygen hetero-atom[s] o… 32 of 42 headings under chapter 29
Is the product tetrahydrofuran, 2-furaldehyde, furfuryl alcohol or tetrahydrofurfuryl alcohol, the specified phosphonic-acid products or their salts, a lactone, isosafrole, 1-[1,3-benzodioxol-5-yl]propan-2-one, piperonal, safrole, tetrahydrocannabinols, carbofuran, or another oxygen-only heterocyclic compound?
✓
Step 4 · Subheading 2932 99 Heterocyclic compounds with oxygen hetero-atom[s] o… 13 of 13 subheadings under heading 2932
Is it tetrahydrofuran, 2-furaldehyde (furfuraldehyde), furfuryl alcohol, tetrahydrofurfuryl alcohol, one of the specifically named phosphonic acids or their salts, a lactone, isosafrole, 1-(1,3-benzodioxol-5-yl)propan-2-one, piperonal, safrole, a tetrahydrocannabinol, carbofuran, or none of these?
✓
Step 5 · Full code 2932 99 00 Heterocyclic compounds with oxygen hetero-atom[s] o… 1 of 1 code under subheading 2932 99

Classification complete

2932 99 00

Other heterocyclic compounds containing only oxygen atoms, excluding non-fused furan-ring compounds, lactones and the specifically listed substances

The spaces only make the code easier to read. Customs declarations normally use the unspaced form, 29329900.

See how EU customs ruled on similar products

Trade measures to be aware of

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.

Lower duty for goods from some countries

Preferential rates exist for goods originating in San Marino; Economic Partnership Agreements; CARIFORUM except Haiti; Comoros (excluding Mayotte), Madagascar, Mauritius, Seychelles and dependencies and Zimbabwe; Botswana, Eswatini, Lesotho, Mozambique and Namibia; GSP-EBA (Special arrangement for the least-developed countries - Everything But Arms); OCTs (Overseas Countries and Territories); Ivory Coast; 52 more origins. 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

Import restrictions are recorded for goods originating in Ukraine; any country except Andorra, Faroe Islands, Greenland, Iceland, Liechtenstein, Norway, San Marino and Switzerland; European Union; Faroe Islands; Greenland; Belarus; Russian Federation; any country.

Document or certificate conditions are recorded. Customs may ask for:
- Movement certificate EUR.1
- Invoice declaration or origin declaration made out by any exporter on invoice or any other commercial document
- 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
- Goods with third country origin coming from San Marino, according to the relevant EU legislation.
- Goods with third country origin coming from Andorra, according to the relevant EU legislation.
Show all 33 document conditions
- Goods with third country origin coming from Switzerland, according to the relevant EU legislation.
- Goods with third country origin coming from Iceland, according to the relevant EU legislation.
- Goods with third country origin coming from Liechtenstein, according to the relevant EU legislation.
- Goods with third country origin coming from Norway, according to the relevant EU legislation.
- Common Health Entry Document for Products (CHED-P) (as set out in Part 2, Section B of Annex II to Commission Implementing Regulation (EU) 2019/1715 (OJ L 261))
- Exemption by virtue of Article 7 of Commission Delegated Regulation 2019/2122 (Goods which form part of passengers' personal luggage and are intended for personal consumption or use) or Article 10 (small consignments of goods sent to natural persons which are not intended to be placed on the market) of Commission Delegated Regulation 2019/2122
- The declared goods are not concerned by Commission Implementing Regulation (EU) 2021/632
- Exemption by virtue of Articles 3 and 4 of regulation 2019/2122 (animals intended for scientific purposes, research and diagnostic samples, and samples for product analysis and quality testing).
- Goods with EU origin returning from Andorra, according to the relevant EU legislation
- Goods with EU origin returning from Norway, according to the relevant EU legislation
- Goods with EU origin returning from San Marino, according to the relevant EU legislation
- Goods with EU origin returning from Iceland, according to the relevant EU legislation
- Goods with EU origin returning from Lichtenstein, according to the relevant EU legislation
- Goods with EU origin returning from Switzerland, according to the relevant EU legislation
- Goods with EU origin coming from outermost regions, according to the relevant EU legislation
- 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)
- Goods other than those described in the Common Military List of the European Union
- 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 4 paragraph 1 of Council Regulation (EU) No 833/2014 do not apply (see exemptions in article 4 paragraph 2)
- Substance/mixture not subjected to the provisions of Regulation (EC) No 1907/2006 (Annex XVII)
- Exemption from REACH restrictions by virtue of Article 67(1) and 67(2) of Regulation (EC) No 1907/2006
- Compliance with the REACH restrictions defined in Column 2 of Annex XVII of Regulation (EC) No 1907/2006
- Import authorisation (precursors) issued by the competent authorities of the Member State where the importer is established
- Generic exemption from REACH authorisation (Art. 56 of Regulation (EC) No 1907/2006)
- Specific exemption from REACH authorisation (exempted (categories of) use listed in Annex XIV of Regulation (EC) No 1907/2006)
- REACH Authorisation, according to Title VII of Regulation (EC) No 1907/2006
- Exemption from Authorization (Title VII) Article 2 point 5 and 8 of Regulation (EC) No 1907/2006 (REACH)
Check this code in the official EU TARIC database

EU tariff measure data version 2026-08-03-tullverket.

Export to Norway

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

29.32.9900

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. 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.

2932 99 00 03

3,4-Dihydro-2-methoxy-2H-pyran (CAS RN 4454-05-1) with a purity by weight of 99 % or more

Ordinary duty

6.0%

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.
2932 99 00 07

3-(1,3-benzodioxol-5-yl)-2-methyloxirane-2-carboxylic acid (PMK glycidic acid) CAS No. 2167189-50-4

Ordinary duty

6.0%

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.
2932 99 00 13

(4-Chloro-3-(4-ethoxybenzyl)phenyl)((3aS,5R,6S,6aS)-6-hydroxy 2,2-dimethyltetrahydrofuro[2,3-d][1 ,3]dioxol-5-yl)methanone (CAS RN 1103738-30-2)

Ordinary duty

6.0%

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.
2932 99 00 15

1,3,4,6,7,8-Hexahydro-4,6,6,7,8,8-hexamethylindeno[5,6-c]pyran (CAS RN 1222-05-5)

Ordinary duty

6.0%

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.
2932 99 00 18

4-(4-Bromo-3-((tetrahydro-2H-pyran-2-yloxy)methyl)phenoxy)benzonitrile (CAS RN 943311-78-2)

Ordinary duty

6.0%

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.
2932 99 00 23

2-ethyl-3-hydroxy-4-pyrone (CAS RN 4940-11-8)

Ordinary duty

6.0%

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.
2932 99 00 25

1-(2,2-Difluorobenzo[d][1,3]dioxol-5-yl)cyclopropanecarboxylic acid (CAS RN 862574-88-7)

Ordinary duty

6.0%

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.
2932 99 00 27

(2-Butyl-3-benzofuranyl)(4-hydroxy-3,5-diiodophenyl)methanone (CAS RN 1951-26-4) with a purity by weight of 99% or more

Ordinary duty

6.0%

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.

Show all 24 lines

2932 99 00 28

1,4,7,10,13-Pentaoxacyclopentadecane (CAS RN 33100-27-5) with a purity by weight of 90 % or more, the remainder mainly consisting of lineair precursors

Ordinary duty

6.0%

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.
2932 99 00 33

3-hydroxy-2-methyl-4-pyrone (CAS RN 118-71-8)

Ordinary duty

6.0%

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.
2932 99 00 38

1-Benzofuran-6-carboxylic acid (CAS RN 77095-51-3) with a purity by weight of 98 % or more

Ordinary duty

6.0%

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.
2932 99 00 43

Ethofumesate (ISO) (CAS RN 26225-79-6) with a purity by weight of 97 % or more

Ordinary duty

6.0%

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.
2932 99 00 45

2-Butylbenzofuran (CAS RN 4265-27-4)

Ordinary duty

6.0%

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.
2932 99 00 48

(20R,25R)-spirost-5-en-3β-ol (CAS RN 512-04-9) with a purity by weight of 95 % or more

Ordinary duty

6.0%

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.
2932 99 00 50

7-Methyl-3,4-dihydro-2H-1,5-benzodioxepin-3-one (CAS RN 28940-11-6)

Ordinary duty

6.0%

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.
2932 99 00 51

3-(3,4-Methylenedioxyphenyl)-2-methylpropanal (CAS RN 1205-17-0) with a purity by weight of 98 % or more

Ordinary duty

6.0%

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.
2932 99 00 57

5-sec-butyl-2-(2,4-dimethylcyclohex-3-en-1- yl)-5-methyl-1,3-dioxane

Ordinary duty

6.0%

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.
2932 99 00 61

Isopropylidene (2-(3,4-methylenedioxyphenyl)acetyl)malonate

Ordinary duty

6.0%

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.
2932 99 00 63

5-sec-butyl-2- (4,6-dimethylcyclohex-3-en-1-yl)-5-methyl- 1,3-dioxane

Ordinary duty

6.0%

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.
2932 99 00 65

4,4-Dimethyl-3,5,8-trioxabicyclo[5,1,0]octane (CAS RN 57280-22-5)

Ordinary duty

6.0%

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.
2932 99 00 83

6,11-Dihydrodibenz[b,e]oxepin-11-one (CAS RN 4504-87-4) with a purity by weight of 98 % or more

Ordinary duty

6.0%

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.
2932 99 00 85

1,3:2,4-bis-O-(3,4-dimethylbenzylidene)-D-glucitol (CAS RN 135861-56-2)

Ordinary duty

6.0%

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.
2932 99 00 87

Methyl 3-oxo-2-(3,4-methylenedioxyphenyl)butanoate (MAMDPA) CAS No. 1369021-80-6

Ordinary duty

6.0%

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.
2932 99 00 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 v4.0.1576, 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).

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Current tariff measures Check today's rate, any restrictions or licences, and the quantity customs asks for, with SKAT or TARIC.

Worth comparing

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

Browse chapter 29

Often confused with

2933 19 90 Heterocyclic compounds with nitrogen hetero-atom[s] only, containing an unfused pyrazole ring, whether or not hydrogenated, in the structure (excl. phenazone "antipyrin" and its derivatives and phenylbutazone "INN") No rate on file
That code concerns heterocyclic compounds containing only nitrogen atoms with a non-fused pyrazole ring, whereas this code concerns compounds containing only oxygen atoms.
2933 39 99 Heterocyclic compounds with nitrogen hetero-atom[s] only, containing an unfused pyridine ring, whether or not hydrogenated, in the structure, n.e.s. No rate on file
That code concerns heterocyclic compounds containing only nitrogen atoms, including compounds with a pyridine ring, whereas this code concerns compounds containing only oxygen atoms.
2933 49 90 Heterocyclic compounds with nitrogen hetero-atom[s] only, containing in the structure a quinoline or isoquinoline ring-system, whether or not hydrogenated, but not further fused (excl. levorphanol "INN", dextromethorphan "INN", and their salts, halogen derivatives of quinoline, quinolinecarboxylic acid derivatives, and inorganic or organic compounds of mercury) No rate on file
That code concerns heterocyclic compounds containing nitrogen and a quinoline or isoquinoline ring structure, whereas this code concerns compounds containing only oxygen atoms.

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.

Other heterocyclic compounds containing only oxygen atoms, excluding non-fused furan-ring compounds, lactones and the specifically listed substances

Other heterocyclic compounds containing only oxygen atoms, excluding non-fused furan-ring compounds, lactones and the specifically listed substances

Trade measures to be aware of

Lower duty for goods from some countries

Restrictions and paperwork

Export to Norway

Export to the United Kingdom

Check the facts that sit outside the code

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