Subheading · Chapter 29 · Heading 2901
2901.23: Butene (butylene) and isomers thereof
2901.23 is a six-digit subheading of heading 2901, acyclic hydrocarbons, chapter 29.
What you pay
Importing into UK
Rates by national line · UK Global Tariff
UK lines →- 2901 23 00 00 Butene (butylene) and isomers thereof Free
- 2901 23 00 00 Butene (butylene) and isomers thereof Free
Additional duties and import rules
Charges on top of the customs duty, and rules the goods must meet at the border.
Additional duties and charges 1
- Duty suspensionSuspension - goods for certain categories of ships, boats and other vessels and for drilling or production platforms Free
- Applies to goods from
- all countries
- Legal act
- 2020 No. 1431
- Documents
- C990 End use authorisation ships and platforms (Column 8c, Annex A of Delegated Regulation (EU) 2015/2446)
Import requirements 1
- Import controlRestriction on entry into free circulation
- Applies to goods from
- Russia, Ukraine
- Legal act
- 2022 No.998, S.I. 2022/395
- Documents
- 9015
- 9016
- 9009
- 9010
- 9017
Preferential rates by country
| Agreement or scheme | Countries | Rate |
|---|---|---|
| standard rate (no agreement) | — | Free |
| DCTS Comprehensive | Afghanistan, Angola, Bangladesh, Benin and 38 moreAfghanistan, Angola, Bangladesh, Benin, Bhutan, Burkina Faso, Burundi, Cambodia, Central African Republic, Chad, Comoros, Congo - Kinshasa, Djibouti, Eritrea, Ethiopia, Gambia, Guinea, Guinea-Bissau, Haiti, Kiribati, Laos, Liberia, Malawi, Mali, Mauritania, Myanmar (Burma), Nepal, Niger, Rwanda, São Tomé & Príncipe, Senegal, Sierra Leone, Somalia, South Sudan, Sudan, Tanzania, Timor-Leste, Togo, Tuvalu, Uganda, Yemen, Zambia | Free |
| European Union (including code "EU") | Free | |
| CARIFORUM | Antigua & Barbuda, Bahamas, Barbados, Belize and 10 moreAntigua & Barbuda, Bahamas, Barbados, Belize, Dominica, Dominican Republic, Grenada, Guyana, Jamaica, St Kitts & Nevis, St Lucia, St Vincent & the Grenadines, Suriname, Trinidad & Tobago | Free |
| OCTs (Overseas Countries and Territories) | Anguilla, Bermuda, British Indian Ocean Territory, British Virgin Islands and 7 moreAnguilla, Bermuda, British Indian Ocean Territory, British Virgin Islands, Cayman Islands, Falkland Islands, Montserrat, Pitcairn Islands, South Georgia & South Sandwich Islands, St Helena, Turks & Caicos Islands | Free |
| SADC EPA | Botswana, Eswatini, Lesotho, Mozambique, Namibia | Free |
| CPTPP | Brunei, Chile, Malaysia, Mexico | Free |
| Eastern and Southern Africa States | Madagascar, Mauritius, Seychelles, Zimbabwe | Free |
| UK–Andorra agreement | Andorra | Free |
| UK–Albania agreement | Albania | Free |
| UK–Australia agreement | Australia | Free |
| UK–Canada agreement | Canada | Free |
| UK–Switzerland agreement | Switzerland | Free |
| UK–Côte d’Ivoire agreement | Côte d’Ivoire | Free |
| UK–Cameroon agreement | Cameroon | Free |
| UK–Colombia agreement | Colombia | Free |
| UK–Ceuta & Melilla agreement | Ceuta & Melilla | Free |
| UK–Ecuador agreement | Ecuador | Free |
| UK–Egypt agreement | Egypt | Free |
| UK–Fiji agreement | Fiji | Free |
| UK–Faroe Islands agreement | Faroe Islands | Free |
| UK–Georgia agreement | Georgia | Free |
| UK–Ghana agreement | Ghana | Free |
| UK–India agreement | India | Free |
| UK–Iceland agreement | Iceland | Free |
| UK–Jordan agreement | Jordan | Free |
| UK–Japan agreement | Japan | Free |
| UK–Kenya agreement | Kenya | Free |
| UK–South Korea agreement | South Korea | Free |
| UK–Liechtenstein agreement | Liechtenstein | Free |
| UK–Morocco agreement | Morocco | Free |
| UK–Moldova agreement | Moldova | Free |
| UK–North Macedonia agreement | North Macedonia | Free |
| UK–Norway agreement | Norway | Free |
| UK–New Zealand agreement | New Zealand | Free |
| UK–Peru agreement | Peru | Free |
| UK–Papua New Guinea agreement | Papua New Guinea | Free |
| UK–Palestinian Territories agreement | Palestinian Territories | Free |
| UK–Serbia agreement | Serbia | Free |
| UK–Solomon Islands agreement | Solomon Islands | Free |
| UK–Singapore agreement | Singapore | Free |
| UK–San Marino agreement | San Marino | Free |
| UK–Ukraine agreement | Ukraine | Free |
| UK–Vietnam agreement | Vietnam | Free |
| UK–Samoa agreement | Samoa | Free |
| UK–Kosovo agreement | Kosovo | Free |
| UK–South Africa agreement | South Africa | Free |
UK: imports by month
Main suppliers, last 12 months
| Country | Value | Share | Change |
|---|---|---|---|
 Belgium | £4.1m | 53.1% | -55.4% |
 Netherlands | £3.6m | 46.7% | -0.6% |
 United States | £19k | 0.2% | +132.4% |
 Germany | £0 | 0% | -100% |
Same subheading in other tariffs
EU
TürkiyeWorld trade in 2024
Trade value (US$) no reported trade < US$159.5kUS$159.5k+US$8.7m+US$74.9m+> US$201.8m
Exports: 40
- United States: US$210.1m
- Belgium: US$201.8m
- South Korea: US$81.5m
- Germany: US$74.9m
- Netherlands: US$36.8m
- Singapore: US$23.3m
- Taiwan: US$22.6m
- Italy: US$19.4m
- Indonesia: US$11.8m
- Qatar: US$8.7m
- China: US$8.2m
- India: US$6m
- Japan: US$5.4m
- Malaysia: US$3.1m
- Brazil: US$1.9m
- Thailand: US$887.3k
- Czechia: US$644.5k
- Austria: US$168.6k
- United Kingdom: US$159.5k
- Slovakia: US$113k
- Switzerland: US$61.5k
- North Macedonia: US$54.3k
- Poland: US$52k
- France: US$42.1k
- Russia: US$26.1k
- Sweden: US$10.8k
- Hungary: US$5.4k
- Portugal: US$3.7k
- Norway: US$3.2k
- South Africa: US$2.8k
- United Arab Emirates: US$1.7k
- Greece: US$900
- Lithuania: US$700
- Latvia: US$700
- Hong Kong SAR China: US$500
- Canada: US$400
- Australia: US$300
- Spain: US$200
- Luxembourg: US$0
- Slovenia: US$0
Trade value (US$) no reported trade < US$71.3kUS$71.3k+US$4.4m+US$29.7m+> US$54.7m
Imports: 73
- Canada: US$203.6m
- Saudi Arabia: US$117.6m
- Belgium: US$54.7m
- Germany: US$47.8m
- Thailand: US$46.5m
- Netherlands: US$33.7m
- Switzerland: US$29.8m
- China: US$29.7m
- Malaysia: US$28.8m
- France: US$24.3m
- Finland: US$16.4m
- Indonesia: US$15.6m
- Austria: US$12.7m
- Philippines: US$9.6m
- South Korea: US$9.5m
- Vietnam: US$7.9m
- Italy: US$5.3m
- Japan: US$4.4m
- Sweden: US$3.5m
- Uzbekistan: US$2.8m
- Hungary: US$2.3m
- Poland: US$1.9m
- Argentina: US$1.9m
- Portugal: US$1.6m
- Czechia: US$1.1m
- Colombia: US$893k
- Brazil: US$658.9k
- Türkiye: US$609.2k
- United Kingdom: US$605.6k
- Australia: US$392.1k
- United States: US$327.6k
- Spain: US$217.1k
- India: US$169.1k
- South Africa: US$102.1k
- Israel: US$81.1k
- Hong Kong SAR China: US$71.3k
- Ukraine: US$63.1k
- Congo - Brazzaville: US$56k
- Bosnia & Herzegovina: US$54.3k
- New Zealand: US$37.4k
- Latvia: US$31.9k
- Romania: US$22.6k
- Peru: US$18.4k
- Singapore: US$14.5k
- Bolivia: US$11.9k
- Denmark: US$8k
- Nicaragua: US$7.8k
- Greece: US$7.5k
- Norway: US$5.8k
- Taiwan: US$5.5k
- Kazakhstan: US$4.2k
- Angola: US$3.8k
- Ecuador: US$3.1k
- Panama: US$2.3k
- Congo - Kinshasa: US$1.8k
- Bahamas: US$1.7k
- Cyprus: US$1.6k
- Guatemala: US$1.2k
- Nepal: US$1.1k
- Botswana: US$1k
Top exporters
| Rank | Country | Value | Share |
|---|---|---|---|
| 1 | United States | US$210.1m | 29.3% |
| 2 | Belgium | US$201.8m | 28.1% |
| 3 |  South Korea | US$81.5m | 11.4% |
| 4 | Germany | US$74.9m | 10.4% |
| 5 | Netherlands | US$36.8m | 5.1% |
| 6 |  Singapore | US$23.3m | 3.2% |
| 7 |  Taiwan | US$22.6m | 3.1% |
| 8 |  Italy | US$19.4m | 2.7% |
| 9 |  Indonesia | US$11.8m | 1.6% |
| 10 |  Qatar | US$8.7m | 1.2% |
Top importers
| Rank | Country | Value | Share |
|---|---|---|---|
| 1 |  Canada | US$203.6m | 28.4% |
| 2 |  Saudi Arabia | US$117.6m | 16.4% |
| 3 | Belgium | US$54.7m | 7.6% |
| 4 | Germany | US$47.8m | 6.7% |
| 5 |  Thailand | US$46.5m | 6.5% |
| 6 | Netherlands | US$33.7m | 4.7% |
| 7 |  Switzerland | US$29.8m | 4.2% |
| 8 |  China | US$29.7m | 4.1% |
| 9 |  Malaysia | US$28.8m | 4% |
| 10 |  France | US$24.3m | 3.4% |
Subheading 2901.23 is a single line in the UK Global Tariff, where the duty is duty-free.
The EU Combined Nomenclature has one tariff line for subheading 2901.23; the duty is duty-free.
Goods from 146 countries can enter the UK at a preferential rate instead of the standard Free; 146 of them pay no duty at all, for example under DCTS Comprehensive or European Union.
In the 12 months to August 2026, the UK imported these goods worth £7.8m (down 40% on the year before), at an average of £1.09 per kg; Belgium supplied 53%, followed by Netherlands.
World trade in these goods reached US$717.5m in 2024, down 6.6% on 2023.
The United States was the largest exporter with 29.3% of the total, ahead of Belgium.
Questions and answers
What is the HS code for butene (butylene) and isomers thereof?
Butene (butylene) and isomers thereof fall under HS subheading 2901.23, part of heading 2901, in section VI of the Harmonized System.
What is the import duty on butene (butylene) and isomers thereof in the UK?
Under the UK Global Tariff, imports under 2901.23 from countries without a preferential agreement are free of duty. Preferential rates, anti-dumping duties and VAT are not included.
What is the import duty on butene (butylene) and isomers thereof in the EU?
Under the EU Combined Nomenclature, imports under 2901.23 from countries without a preferential agreement are free of duty. Preferential rates, anti-dumping duties and VAT are not included.
Which country exports the most butene (butylene) and isomers thereof?
The United States, with US$210.1m in 2024 (29.3% of world exports).
Which countries can export these goods to the UK duty-free?
146 countries pay no duty under a trade agreement or preference scheme, among them partners under DCTS Comprehensive, European Union, CARIFORUM. The goods must meet the agreement’s rules of origin and the importer needs proof of origin; otherwise the standard rate of Free applies. Pick a country above to see its rate.
Where does the UK import these goods from?
In the 12 months to August 2026, the largest suppliers were Belgium (53%), Netherlands (47%) and United States (0%), out of total imports of £7.8m.