Subheading · Chapter 29 · Heading 2918

2918.99: Carboxylic acids with additional oxygen function and their: other, other

Other oxygen-function carboxylic acids

Official description Other

2918.99 is the HS subheading for other oxygen-function carboxylic acids, under heading 2918 in chapter 29.

Importing into Country of origin

What you pay

Importing into UK

Customs duty Free – 6% standard rate · across 20 national lines depends on the country of origin

Additional duties and charges 3 additional measures Import requirements: 5

VAT 20.00 % import VAT

Duty calculatorCalculate duty and taxes →

Rates by national line · UK Global Tariff

UK lines →

2918 99 00 00 Other
2918 99 40 00 2.6-dimethoxybenzoic acid; dicamba (iso); sodium phenoxyacetate Free+3
2918 99 90 00 Other
2918 99 90 13 3-methoxy-2-methylbenzoyl chloride (cas rn 24487-91-0) 6%+4
2918 99 90 15 Ethyl 2.3-epoxy-3-phenylbutyrate (cas rn 77-83-8) 6%+4
2918 99 90 18 Ethyl 2-hydroxy-2-(4-phenoxyphenyl)propanoate (cas rn 132584-17-9) 6%+4
2918 99 90 25 Methyl (e)-3-methoxy-2-(2-chloromethylphenyl)-2-propenoate (cas rn 117428-51-0) 6%+4
2918 99 90 27 Ethyl 3-ethoxypropionate (cas rn 763-69-9) 6%+4
2918 99 90 35 P-anisic acid (cas rn 100-09-4) 6%+4
2918 99 90 38 Diclofop-methyl (iso) (cas rn 51338-27-3) 6%+4
2918 99 90 40 Trans-4-hydroxy-3-methoxycinnamic acid (cas rn 1135-24-6) 6%+4
2918 99 90 45 4-methylcatechol dimethyl acetate (cas rn 52589-39-6) 6%+4
2918 99 90 48 2-bromo-5-methoxybenzoic acid (cas rn 22921-68-2) with a purity by weight of 98% or more 6%+3
2918 99 90 50 Methyl 3.4,5-trimethoxybenzoate (cas rn 1916-07-0) 6%+4
2918 99 90 58 2.4-d (iso) (cas rn 94-75-7) with a purity by weight of 98% or more 6%+3
2918 99 90 60 3.4,5-trimethoxybenzoic acid (cas rn 118-41-2) 6%+4
2918 99 90 63 2-methyl-3-phenyloxirane-2-carboxylic acid (bmk glycidic acid) cas no. 25547-51-7 6%+3
2918 99 90 67 Allyl-(3-methylbutoxy)acetate (cas rn 67634-00-8) with a purity by weight of 95% or more 6%+4
2918 99 90 73 Methyl (2r)-2-(4-hydroxyphenoxy)propionate (cas rn 96562-58-2) with a purity by weight of 97% or more 6%+3
2918 99 90 78 3.4-epoxycyclohexylmethyl-3',4'-epoxycyclohexane carboxylate (cas rn 2386-87-0) with a purity by weight of 91% or more 6%+4
2918 99 90 85 Trinexapac-ethyl (iso) (cas rn 95266-40-3) with a purity by weight of 96% or more 6%+4
2918 99 90 90 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 suspensionAutonomous tariff suspension Free
Applies to goods from
all countries

In force
until 31 December 2028

Legal act
2020 No. 1435
Documents
- 9Y12
Tariff lines
on 15 of 20 lines

Import requirements 5

Prohibition or restrictionImport prohibition

Applies to goods from
North Korea

Legal act
S.I. 2019/411

Tariff lines
on 19 of 20 lines
Import controlRestriction on entry into free circulation
Applies to goods from
Syria, Ukraine

Legal act
S.I. 2022/395, S.I. 2019/792
Documents
- 9009
- 9010
- 9017
Import controlImport control on restricted goods and technologies
Applies to goods from
Iran, Libya, Russia

Legal act
S.I. 2019/461, 2020 No. 1665, S.I. 2019/855
Documents
- Y966 Goods other than those described in the MG footnotes linked to the measure (Missile Technology Control Regime list - Annex III of Reg. (EU) 267/2012)
- Y920 Goods other than those described in the footnotes linked to the measure
Tariff lines
on 19 of 20 lines
Import control
Applies to goods from
all countries

Legal act
2004 No. 273
Documents
- 9112
- 911Y
Tariff lines
on 2 of 20 lines
Import control
Applies to goods from
all countries

Legal act
2004 No. 273
Documents
- 9112
- 911Y
Tariff lines
on 2 of 20 lines

Preferential rates by country

Agreement or scheme	Countries	Rate
standard rate (no agreement)	—	Free – 6%
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£45.2m-7.3% · previous 12 months

Average import price£3.56 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	£34.2m	75.6%	-16.4%
China	£5.8m	12.7%	+42.2%
India	£2.4m	5.2%	+342.3%
Japan	£1.1m	2.3%	-23.1%
United States	£1m	2.3%	-3.6%
France	£446k	1%	+129.7%
Hungary	£116k	0.3%	+34.6%
Poland	£60k	0.1%	+152.3%

Same subheading in other tariffs

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

Türkiye 15% Statutory rate (Law 474) 6 tariff lines

USA Free – 6.5% General (MFN) 10 tariff lines · average 4.9%

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

2918.99 · US$1.6bn

Trade value (US$) no reported trade < US$276kUS$276k+US$5.9m+US$40.9m+> US$118.1m

Exports: 84

China: US$621.1m
India: US$411.4m
Germany: US$118.1m
Switzerland: US$65.4m
United States: US$59m
United Kingdom: US$46.1m
France: US$41.4m
Japan: US$40.9m
Mexico: US$38.3m
Italy: US$34.9m
South Korea: US$25.3m
Austria: US$20.6m
Netherlands: US$15m
Spain: US$14.1m
Argentina: US$13.4m
Colombia: US$12.6m
Belgium: US$11.6m
Poland: US$10.9m
Croatia: US$6m
Hungary: US$5.9m
Czechia: US$4.8m
Taiwan: US$3.6m
Singapore: US$3.5m
Slovenia: US$1.9m
Australia: US$1.7m
Thailand: US$1.6m
New Zealand: US$1.5m
Russia: US$1.1m
Türkiye: US$1m
Serbia: US$728.4k
Israel: US$617.3k
Canada: US$590.4k
Hong Kong SAR China: US$470.5k
Ukraine: US$461.7k
Greece: US$409.2k
Bulgaria: US$370.5k
Latvia: US$370.5k
Estonia: US$346.3k
Ireland: US$344.1k
Denmark: US$276k
Malaysia: US$251.8k
South Africa: US$211.1k
Portugal: US$175.9k
Brazil: US$165.1k
Slovakia: US$153k
United Arab Emirates: US$87k
Romania: US$82.2k
Belize: US$74.8k
Armenia: US$72.3k
Morocco: US$69.4k
Guatemala: US$66.6k
Sweden: US$56.3k
Chile: US$54k
Philippines: US$48k
Lithuania: US$42.3k
Tunisia: US$37.6k
Kenya: US$30k
Uruguay: US$25.5k
Finland: US$15.2k
Indonesia: US$14.9k

Top exporters

Rank	Country	Value	Share
1	China	US$621.1m	37.9%
2	India	US$411.4m	25.1%
3	Germany	US$118.1m	7.2%
4	Switzerland	US$65.4m	4%
5	United States	US$59m	3.6%
6	United Kingdom	US$46.1m	2.8%
7	France	US$41.4m	2.5%
8	Japan	US$40.9m	2.5%
9	Mexico	US$38.3m	2.3%
10	Italy	US$34.9m	2.1%

Top importers

Rank	Country	Value	Share
1	United States	US$397.8m	24.3%
2	Brazil	US$95.9m	5.8%
3	Argentina	US$87.6m	5.3%
4	Singapore	US$73m	4.5%
5	India	US$72.4m	4.4%
6	Japan	US$62.9m	3.8%
7	Switzerland	US$60m	3.7%
8	France	US$57.4m	3.5%
9	Italy	US$56.9m	3.5%
10	United Kingdom	US$56.8m	3.5%

The UK Global Tariff divides subheading 2918.99 into 20 tariff lines; the duty is between 0% and 6% (average 5.4%). 2 of them are duty-free.

In the EU Combined Nomenclature, subheading 2918.99 covers 2 tariff lines and the duty is between 0% and 6.5%. 1 of them is duty-free.

175 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 Free – 6%.

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

Imports of other oxygen-function carboxylic acids into the UK came to £45.2m between September 2025 and August 2026 (down 7% on the year before); Germany supplied 76%, followed by China.

In 2024, countries exported other oxygen-function carboxylic acids worth US$1.6bn (−1.2% year on year).

The largest exporter was China (US$621.1m), followed by India.

Questions and answers

What is the HS code for carboxylic acids with additional oxygen function and their: other, other?

Carboxylic acids with additional oxygen function and their: other, other fall under HS subheading 2918.99, part of heading 2918, in section VI of the Harmonized System.

What is the import duty on carboxylic acids with additional oxygen function… in the UK?

Under the UK Global Tariff, imports under 2918.99 from countries without a preferential agreement are charged at 0% to 6%, depending on the line. Preferential rates, anti-dumping duties and VAT are not included.

What is the import duty on carboxylic acids with additional oxygen function… in the EU?

Under the EU Combined Nomenclature, imports under 2918.99 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 carboxylic acids with additional oxygen function…?

China, with US$621.1m in 2024 (37.9% of world exports).

Which countries can export other oxygen-function carboxylic acids 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 – 6% applies. Pick a country above to see its rate.

Is there anti-dumping duty on other oxygen-function carboxylic acids?

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 other oxygen-function carboxylic acids from?

In the 12 months to August 2026, the largest suppliers were Germany (76%), China (13%) and India (5%), out of total imports of £45.2m.