Subheading · Chapter 29 · Heading 2933

2933.53: Allobarbital (INN), amobarbital (INN), barbital (INN), butalbital (INN), butobarbital, cyclobarbital (INN), methylphenobarbital (INN), pentobarbital (INN), phenobarbital (INN), secbutabarbital (INN), secobarbital (INN) and vinylbital (INN); salts thereof

2933.53 is a six-digit subheading of heading 2933, heterocyclic compounds with nitrogen hetero-atom(s) only, chapter 29.

Importing into Country of origin

What you pay

Importing into UK

Customs duty Free standard rate · across 2 national lines depends on the country of origin

Additional duties and charges 3 additional measures Import requirements: 2

VAT 20.00 % import VAT

Duty calculatorCalculate duty and taxes →

Rates by national line · UK Global Tariff

UK lines →

2933 53 00 00 Allobarbital (inn), amobarbital (inn), barbital (inn), butalbital (inn), butobarbital, cyclobarbital (inn), methylphenobarbital (inn), pentobarbital (inn), phenobarbital (inn), secbutabarbital (inn), secobarbital (inn) and vinylbital (inn); salts thereof
2933 53 10 00 Phenobarbital (inn), barbital (inn), and their salts Free+4
2933 53 90 00 Other Free+4

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 3

Additional dutyAdditional duties 35%
Applies to goods from
Belarus, Russia

Legal act
2022 No. 833
Documents
- 9018
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)
Duty suspensionAirworthiness tariff suspension Free
Applies to goods from
all countries

Legal act
S.I. 2018/1249
Documents
- C119 Authorised Release Certificate — EASA Form 1 (Appendix I to Annex I to Regulation (EU) No 748/2012), or equivalent certificate

Import requirements 2

Import control
Applies to goods from
all countries

Legal act
2001 No. 3998
Documents
- 9113
- 913Y
Import controlRestriction on entry into free circulation
Applies to goods from
Russia, Ukraine

Legal act
2023 No. 440, S.I. 2022/395
Documents
- 9011
- 9022
- 9038
- 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 more Afghanistan, 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")	Austria, Belgium, Bulgaria, Croatia and 23 more Austria, Belgium, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden	Free
DCTS Enhanced	Algeria, Bolivia, Cape Verde, Congo - Brazzaville and 13 more Algeria, Bolivia, Cape Verde, Congo - Brazzaville, Cook Islands, Kyrgyzstan, Micronesia, Mongolia, Nigeria, Niue, Pakistan, Philippines, Sri Lanka, Syria, Tajikistan, Uzbekistan, Vanuatu	Free
CARIFORUM	Antigua & Barbuda, Bahamas, Barbados, Belize and 10 more Antigua & 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 more Anguilla, 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
Central America	Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, Panama	Free
SADC EPA	Botswana, Eswatini, Lesotho, Mozambique, Namibia	Free
Eastern and Southern Africa States	Madagascar, Mauritius, Seychelles, Zimbabwe	Free
CPTPP	Brunei, Malaysia	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–Chile agreement	Chile	Free
UK–Cameroon agreement	Cameroon	Free
UK–Colombia agreement	Colombia	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
DCTS Standard	Indonesia	Free
UK–Israel agreement	Israel	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–Lebanon agreement	Lebanon	Free
UK–Liechtenstein agreement	Liechtenstein	Free
UK–Morocco agreement	Morocco	Free
UK–Moldova agreement	Moldova	Free
UK–North Macedonia agreement	North Macedonia	Free
UK–Mexico agreement	Mexico	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–Tunisia agreement	Tunisia	Free
UK–Türkiye agreement	Türkiye	Free
UK–Ukraine agreement	Ukraine	Free
UK–Vietnam agreement	Vietnam	Free
UK–Samoa agreement	Samoa	Free
UK–XC agreement	XC	Free
UK–Kosovo agreement	Kosovo	Free
UK–XL agreement	XL	Free
UK–South Africa agreement	South Africa	Free

UK: imports by month

last 12 months£1.5m+113.9% · previous 12 months

Average import price£223.36 per kg

Data up to August 2026 (provisional) · Monthly data: Eurostat Comext (CC BY 4.0), HMRC (OGL v3.0)

Main suppliers, last 12 months

Country	Value	Share	Change
Germany	£1.1m	73.7%	+85.7%
Netherlands	£265k	18%	—
China	£44k	3%	+6%
Hungary	£37k	2.5%	+34.5%
India	£27k	1.8%	+42.3%
United States	£9k	0.6%	-45.4%
Poland	£3k	0.2%	—
France	£2k	0.1%	—

Same subheading in other tariffs

EU Free – 6.5% Third-country duty 2 tariff lines · average 3.3%

Türkiye 20% Statutory rate (Law 474) 16 tariff lines

USA Free General (MFN) 1 tariff line

The Turkish schedule prints the statutory rate set under Customs Law 474. The rate applied at import is laid down in the Import Regime Decision and can be lower, or different by country of origin.

World trade in 2024

2933.53 · US$57.1m

Trade value (US$) no reported trade < US$97.1kUS$97.1k+US$2.8m+US$5.1m+> US$17.3m

Exports: 35

Ireland: US$17.3m
Germany: US$7.4m
India: US$6.6m
Spain: US$5.1m
Belgium: US$4.8m
Taiwan: US$4.6m
China: US$4.4m
Hungary: US$2.8m
Switzerland: US$1.3m
Estonia: US$937.1k
United States: US$804.5k
Denmark: US$196.9k
Senegal: US$155.2k
United Kingdom: US$135.4k
Netherlands: US$107.1k
France: US$97.1k
Canada: US$67.8k
South Africa: US$56.3k
Singapore: US$42k
Australia: US$18.5k
Poland: US$6.2k
Hong Kong SAR China: US$5.3k
Portugal: US$4.6k
Czechia: US$4.3k
Argentina: US$3.2k
Italy: US$2.8k
Brazil: US$500
Saudi Arabia: US$400
Sweden: US$400
Japan: US$300
Norway: US$200
Türkiye: US$100
Bulgaria: US$0
Greece: US$0
Russia: US$0

Top exporters

Rank	Country	Value	Share
1	Ireland	US$17.3m	30.3%
2	Germany	US$7.4m	13%
3	India	US$6.6m	11.6%
4	Spain	US$5.1m	9%
5	Belgium	US$4.8m	8.4%
6	Taiwan	US$4.6m	8%
7	China	US$4.4m	7.8%
8	Hungary	US$2.8m	4.9%
9	Switzerland	US$1.3m	2.3%
10	Estonia	US$937.1k	1.6%

Top importers

Rank	Country	Value	Share
1	Belgium	US$17.5m	30.6%
2	United States	US$6.4m	11.1%
3	Italy	US$5.4m	9.4%
4	Germany	US$5.2m	9.1%
5	Netherlands	US$4.9m	8.7%
6	France	US$2.6m	4.6%
7	Brazil	US$1.2m	2.2%
8	Switzerland	US$1.2m	2.2%
9	India	US$1.1m	1.9%
10	Colombia	US$984.5k	1.7%

In the UK Global Tariff, subheading 2933.53 covers 2 tariff lines and the duty is duty-free.

The EU Combined Nomenclature divides subheading 2933.53 into 2 tariff lines; the duty is between 0% and 6.5% (average 3.3%). 1 of them is duty-free.

Goods from 175 countries can enter the UK at a preferential rate instead of the standard Free; 175 of them pay no duty at all, for example under DCTS Comprehensive or European Union.

In the UK, additional duty of 35% applies on top of the customs duty to goods from Belarus and Russia.

In the 12 months to August 2026, the UK imported these goods worth £1.5m (up 114% on the year before), at an average of £223.36 per kg; Germany supplied 74%, followed by Netherlands.

World trade in these goods reached US$57.1m in 2024, up 33.6% on 2023.

Ireland was the largest exporter with 30.3% of the total, ahead of Germany.

Questions and answers

What is the HS code for allobarbital (INN), amobarbital (INN), barbital (INN), butalbital (INN), butobarbital, cyclobarbital (INN), methylphenobarbital (INN), pentobarbital (INN), phenobarbital (INN), secbutabarbital (INN), secobarbital (INN) and vinylbital (INN); salts thereof?

Allobarbital (INN), amobarbital (INN), barbital (INN), butalbital (INN), butobarbital, cyclobarbital (INN), methylphenobarbital (INN), pentobarbital (INN), phenobarbital (INN), secbutabarbital (INN), secobarbital (INN) and vinylbital (INN); salts thereof fall under HS subheading 2933.53, part of heading 2933, in section VI of the Harmonized System.

What is the import duty on allobarbital in the UK?

Under the UK Global Tariff, imports under 2933.53 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 allobarbital in the EU?

Under the EU Combined Nomenclature, imports under 2933.53 from countries without a preferential agreement are charged at 0% to 6.5%, depending on the line. Preferential rates, anti-dumping duties and VAT are not included.

Which country exports the most allobarbital?

Ireland, with US$17.3m in 2024 (30.3% of world exports).

Which countries can export these goods to the UK duty-free?

175 countries pay no duty under a trade agreement or preference scheme, among them partners under DCTS Comprehensive, European Union, DCTS Enhanced. 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.

Is there anti-dumping duty on these goods?

The UK charges additional duty of 35% on goods from Belarus and Russia. Lower rates apply to the named exporters listed in the measure.

Where does the UK import these goods from?

In the 12 months to August 2026, the largest suppliers were Germany (74%), Netherlands (18%) and China (3%), out of total imports of £1.5m.