UK Global Tariff · commodity code · HS 2935.90
2935 90 90 80: Other sulphonamides: 4-chloro-3-sulphamoylbenzoic acid (cas rn 1205-30-7) with a purity by weight of 97% or more
Other sulphonamides
✓ Can be used in a customs declaration Data: UK Global Tariff · checked on 24 October 2026
- 2935 Sulphonamides
- 2935 90 00 00 Other
- 2935 90 90 00 Other
- 2935 90 90 80 4-chloro-3-sulphamoylbenzoic acid (cas rn 1205-30-7) with a purity by weight of 97% or more
What you pay
Importing into UK
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 2
- 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)
Import requirements 1
- Import controlRestriction on entry into free circulation
- Applies to goods from
- Ukraine
- Legal act
- S.I. 2022/395
- Documents
- 9009
- 9010
- 9017
Preferential rates by country
| Agreement or scheme | Countries | Rate |
|---|---|---|
| standard rate (no agreement) | — | 6% |
| 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 | |
| DCTS Enhanced | Algeria, Bolivia, Cape Verde, Congo - Brazzaville and 13 moreAlgeria, 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 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 |
| 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–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–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–Kosovo agreement | Kosovo | Free |
| UK–South Africa agreement | South Africa | Free |
| DCTS Standard | Indonesia | 2.5% |
Footnotes
TN701 According to the Council Regulation (EU) No 692/2014 (OJ L183, p. 9), as retained in UK La…
The prohibition shall not apply in respect of:
(a) the execution until 26 September 2014, of trade contracts concluded before 25 June 2014, or of ancillary contracts necessary for the execution of such contracts, provided that the natural or legal persons, entity or body seeking to perform the contract have notified, at least 10 working days in advance, the activity or transaction to the competent authority of the Member State in which they are established.
(b) goods originating in Crimea or Sevastopol which have been made available to the Ukrainian authorities for examination, for which compliance with the conditions conferring entitlement to preferential origin has been verified and for which a certificate of origin has been issued in accordance with Regulation (EU) No 978/2012 and Regulation (EU) No 374/2014, as retained in UK Law, or in accordance with the EU-Ukraine Association Agreement
TN702 According to the Council Regulation (EU) No 1351/2014 (OJ L365, p. 46), the export of good…
(a) to any natural or legal person, entity or body in Crimea or Sevastopol, or
(b) for use in Crimea or Sevastopol.
The prohibitions shall be without prejudice to the execution until 21 March 2015 of an obligation arising from a contract concluded before 20 December 2014, or by ancillary contracts necessary for the execution of such contracts, provided that the competent authority has been informed at least five working days in advance.
When related to the use in Crimea or Sevastopol, the prohibitions do not apply where there are no reasonable grounds to determine that the goods and technology or the services are to be used in Crimea or Sevastopol.
UK: imports by month · HS 2935.90
Main suppliers, last 12 months
| Country | Value | Share | Change |
|---|---|---|---|
 China | £11.2m | 56.4% | +27.9% |
 United States | £3.3m | 16.5% | +140.4% |
 Italy | £2m | 10.2% | -27.9% |
 India | £911k | 4.6% | +11.5% |
 Ireland | £788k | 4% | -66% |
 Netherlands | £544k | 2.7% | +1,079.4% |
 Hong Kong SAR China | £204k | 1% | — |
 Germany | £194k | 1% | +143.7% |
Same subheading in other tariffs
EU Free – 6.5% Third-country duty 2 tariff lines · average 3.3% 
Türkiye Free – 6.5% Third-country duty 13 tariff lines · average 6% USA Free – 6.5% General (MFN) 14 tariff lines · average 4.2% 
Canada Free Third-country duty 1 tariff line 
Mexico Free – 5% Third-country duty 38 tariff lines · average 0.5% 
Brazil Free – 12.6% Third-country duty 19 tariff lines · average 5.1% 
Argentina Free – 12.6% Third-country duty 36 tariff lines · average 2.7% 
Peru Free Third-country duty 2 tariff lines 
New Zealand Free Third-country duty 1 tariff line 
Japan 3.9% Third-country duty 1 tariff line 
Taiwan 5% Third-country duty 8 tariff lines 
GCC 5% Third-country duty 1 tariff line 
Switzerland Free Third-country duty 1 tariff line 
Norway Free Third-country duty 1 tariff line 
North Macedonia Free – 5% Third-country duty 2 tariff lines · average 2.5% 
Nigeria 5% Third-country duty 1 tariff line UK lines: 2935.90
- 2935 90 30 00Sulphonamides, other, 3-{1-[7-(hexadecylsulphonylamino)-1h-indole-3-yl]-3-oxo-1h,3h-naphtho[1.8-cd]pyran-1-yl}-n,n-dimethyl-1h-indole-7-sulphonamide; metosulam (iso)
- 2935 90 90 10Florasulam (iso) (cas rn 145701-23-1)
- 2935 90 90 162-bromo-n-(4.5-dimethyl-1.2-oxazol-3-yl)-n-(methoxymethyl) benzene-1-sulfonamide (cas rn 415697-57-3) with a purity by weight of 97% or more
- 2935 90 90 184-amino-2.5-dimethoxy-n-methylbenzenesulfonamide (cas rn 49701-24-8) with a purity by weight of 98% or more
- 2935 90 90 194-amino-2.5-dimethoxy-n-phenylbenzenesulphonamide (cas rn 52298-44-9) with a purity by weight of 98% or more
- 2935 90 90 20Sulphonamides, other, other, toluenesulphonamides
- 2935 90 90 21Encorafenib (inn) (cas 1269440-17-6) with a purity by weight of 99% or more
- 2935 90 90 22Methyl 2-(chlorosulfonyl)-4-(methylsulfonamidomethyl)benzoate (cas rn 393509-79-0) with a purity by weight of 90% or more
- 2935 90 90 23N-[4-(2-chloroacetyl)phenyl]methanesulphonamide (cas rn 64488-52-4)
- 2935 90 90 243-({[(4-methylphenyl)sulfonyl]carbamoyl}amino)phenyl 4-methylbenzenesulfonate (cas rn 232938-43-1) with a purity by weight of 99% or more
- 2935 90 90 265-(2-fluorophenyl)-1-(pyridin-3-ylsulfonyl)-1h-pyrrole-3-carbaldehyde (cas rn 881677-11-8) with a purity by weight of 97% or more
- 2935 90 90 27Methyl (3r,5s,6e)-7-{4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl}-3.5-dihydroxyhept-6-enoate (cas rn 147118-40-9)
- 2935 90 90 29Vemurafenib (inn) (cas rn 918504-65-1) with a purity by weight of 98% or more
- 2935 90 90 306-aminopyridine-2-sulfonamide (cas rn 75903-58-1)
- 2935 90 90 315-(n-3-methylphenyl-sulfonylamido)-(n',n''-bis-(3-methylphenyl)-isophthalicacid-diamide) (cas rn 2375645-78-4) with a purity by weight of 95% or more
- 2935 90 90 324-chloro-3-nitro-5-sulphamoylbenzoic acid (cas rn 22892-96-2) with a purity by weight of 96% or more
- 2935 90 90 334-chloro-3-pyridinesulphonamide (cas rn 33263-43-3)
- 2935 90 90 371.3-dimethyl-1h-pyrazole-4-sulfonamide (cas rn 88398-53-2)
- 2935 90 90 40Venetoclax (inn) (cas 1257044-40-8)
- 2935 90 90 41Lenacapavir sodium (innm) (cas rn 2283356-12-5) with a purity by weight of 98% or more
- 2935 90 90 42Penoxsulam (iso) (cas rn 219714-96-2)
- 2935 90 90 444-[2-(7-methoxy-4.4-dimethyl-1.3-dioxo-3.4-dihydroisoquinolin-2(1h)-yl)ethyl]bezenesulphonamide (cas rn 33456-68-7) with a purity by weight of 99.5% or more
- 2935 90 90 45Rimsulfuron (iso) (cas rn 122931-48-0)
- 2935 90 90 48(3r,5s,6e)-7-[4-(4-fluorophenyl)-2-[methyl(methylsulfonyl)amino]-6-(propan-2-yl)pyrimidin-5-yl]-3.5-dihydroxyhept-6-enoic acid -- 1-[(r)-(4-chlorophenyl)(phenyl)methyl]piperazine (1:1), (cas rn 1235588-99-4)
- 2935 90 90 504.4'-oxydi(benzenesulphonohydrazide) (cas rn 80-51-3)
- 2935 90 90 532.4-dichloro-5-sulphamoylbenzoic acid (cas rn 2736-23-4)
- 2935 90 90 54Propoxycarbazone-sodium (iso) (cas rn 181274-15-7) with a purity by weight of 95% or more
- 2935 90 90 55Thifensulfuron-methyl (iso) (cas rn 79277-27-3)
- 2935 90 90 57N-{2-[(phenylcarbamoyl)amino]phenyl}benzenesulphonamide (cas rn 215917-77-4)
- 2935 90 90 59Flazasulfuron (iso) (cas rn 104040-78-0) with a purity of 94% by weight or more
- 2935 90 90 63Nicosulphuron (iso), (cas rn 111991-09-4) of a purity by weight of 91% or more
- 2935 90 90 65Tribenuron-methyl (iso) (cas rn 101200-48-0)
- 2935 90 90 70(4s)-4-hydroxy-2-(3-methoxypropyl)-3.4-dihydro-2h-thieno[3.2-e]thiazine-6-sulfonamide-1.1-dioxide (cas rn 154127-42-1) with a purity by weight of 97% or more
- 2935 90 90 794-[[(2-methoxybenzoyl)amino]sulfonyl]benzoyl chloride (cas rn 816431-72-8)
- 2935 90 90 804-chloro-3-sulphamoylbenzoic acid (cas rn 1205-30-7) with a purity by weight of 97% or more
- 2935 90 90 88N-(2-(4-amino-n-ethyl-m-toluidino)ethyl)methanesulphonamide sesquisulphate monohydrate (cas rn 25646-71-3)
- 2935 90 90 893-(3-bromo-6-fluoro-2-methylindol-1-ylsulphonyl)-n,n-dimethyl-1.2,4-triazol-1-sulphonamide (cas rn 348635-87-0)
- 2935 90 90 99Sulphonamides, other, other, other
Binding rulings for similar goods
Decisions of U.S. Customs and Border Protection (CROSS) and HMRC (Advance Tariff Rulings) on goods classified here. A ruling binds only its holder, but shows how the authorities classify similar goods. The descriptions are the authorities’ own, in English.
- N357263 U.S. CBP
The tariff classification of N-Phenyl-N-(trichloromethylsulfenyl)-benzenesulfonamide (CAS No. 2280-49-1) from China
- N360727 U.S. CBP
The tariff classification of Tenapanor Hydrochloride (CAS No. 1234365-97-9) in bulk form, from Taiwan
- N344340 U.S. CBP
The tariff classification of Color Developing Agent 3 (CAS No. 25646-71-3) and Color Developing Agent 4 (CAS No. 25646-77-9) from China imported in bulk form
- N334917 U.S. CBP
The tariff classification of Sodium bis(trifluoromethane)sulfonimide (CAS # 91742-21-1) from China
12 rulings in total for this code
Legal notes
Code history
Since 2017; before, these goods were classified under 2935.00.
Commodity code 2935 90 90 80 is a line of the UK Global Tariff under HS subheading 2935.90 (sulphonamides, other).
The third-country duty is 6%.
173 countries pay no duty in the UK thanks to trade agreements and preference schemes such as DCTS Comprehensive and European Union, against a standard rate of 6%.
In the UK, additional duty of 35% applies on top of the customs duty to goods from Belarus and Russia.
Imports of other sulphonamides (HS 2935.90) into the UK came to £19.8m between September 2025 and August 2026 (up 12% on the year before); China supplied 56%, followed by United States.
For the same subheading, the EU duty is 0%–6.5%, the Türkiye duty is 0%–6.5%, the US duty is 0%–6.5%, the Canada duty is free, the Mexico duty is 0%–5%, the Brazil duty is 0%–12.6%, the Argentina duty is 0%–12.6%, the Peru duty is free, the New Zealand duty is free, the Japan duty is 3.9%, the Taiwan duty is 5%, the GCC duty is 5%, the Switzerland duty is free, the Norway duty is free, the North Macedonia duty is 0%–5% and the Nigeria duty is 5%.
The UK imported goods of subheading 2935.90 worth US$38m in 2024; the largest supplier was China.
Questions and answers
What is the UK import duty for commodity code 2935 90 90 80?
The third-country duty in the UK Global Tariff is 6%. Preferential rates for goods from agreement countries, anti-dumping duties and VAT are not included.
Which countries get a lower rate on 2935 90 90 80?
174 countries have a preferential rate on this line, 173 of them at 0%, under DCTS Comprehensive, European Union and DCTS Enhanced and other arrangements. The rate applies only to goods that meet the rules of origin of the agreement, with proof of origin. Choose the country of origin on this page to see its rate.
Do anti-dumping or other extra duties apply to 2935 90 90 80?
Additional duty of 35% on goods from Belarus and Russia. These are charged on top of the customs duty.
Where does the UK import these goods from?
For subheading 2935.90 as a whole, the largest supplier in 2024 was China (US$11m), followed by the United States.