Subheading · Chapter 29 · Heading 2921

2921.51: o-, m-, p-Phenylenediamine, diaminotoluenes, and their derivatives; salts thereof

Subheading 2921.51 belongs to heading 2921 (amine-function compounds) in chapter 29.

Importing into Country of origin

What you pay

Importing into UK

Customs duty Free – 6% standard rate · across 7 national lines depends on the country of origin

Additional duties and charges 3 additional measures Import requirements: 3

VAT 20.00 % import VAT

Duty calculatorCalculate duty and taxes →

Rates by national line · UK Global Tariff

UK lines →

2921 51 00 00 O-, m-, p-phenylenediamine, diaminotoluenes, and their derivatives; salts thereof
O-, m-, p-phenylenediamine, diaminotoluenes and their halogenated, sulphonated, nitrated and nitrosated derivatives; salts thereof
2921 51 11 00 M-phenylenediamine, of a purity by weight of 99% or more and containing: - 1% or less by weight of water, - 200 mg/kg or less of o-phenylenediamine and - 450 mg/kg or less of p-phenylenediamine Free
2921 51 19 00 Other 6%
2921 51 19 10 O-phenylenediamine (cas rn 95-54-5) 6%
2921 51 19 30 2-methyl-p-phenylenediamine sulphate (cas rn 615-50-9) 6%
2921 51 19 40 P-phenylenediamine (cas rn 106-50-3) 6%
2921 51 19 50 2-chloro-1.4-phenylendiamine (cas rn 615-66-7) or 2.5-dichloro-1.4-phenylendiamine (cas rn 20103-09-7) 6%
2921 51 19 90 Other 6%
2921 51 90 00 Other 6%
2921 51 00 00 O-, m-, p-phenylenediamine, diaminotoluenes, and their derivatives; salts thereof
O-, m-, p-phenylenediamine, diaminotoluenes and their halogenated, sulphonated, nitrated and nitrosated derivatives; salts thereof
2921 51 11 00 M-phenylenediamine, of a purity by weight of 99% or more and containing: - 1% or less by weight of water, - 200 mg/kg or less of o-phenylenediamine and - 450 mg/kg or less of p-phenylenediamine Free
2921 51 19 00 Other 6%
2921 51 19 10 O-phenylenediamine (cas rn 95-54-5) 6%
2921 51 19 30 2-methyl-p-phenylenediamine sulphate (cas rn 615-50-9) 6%
2921 51 19 40 P-phenylenediamine (cas rn 106-50-3) 6%
2921 51 19 50 2-chloro-1.4-phenylendiamine (cas rn 615-66-7) or 2.5-dichloro-1.4-phenylendiamine (cas rn 20103-09-7) 6%
2921 51 19 90 Other 6%
2921 51 90 00 Other 6%

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 6 of 7 lines

Import requirements 3

Prohibition or restrictionImport prohibition

Applies to goods from
North Korea

Legal act
S.I. 2019/411

Tariff lines
on 5 of 7 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 5 of 7 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–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
DCTS Standard	Indonesia	Free – 2.5%
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

UK: imports by month

last 12 months£2.6m-1% · previous 12 months

Average import price£3.93 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
Belgium	£1.5m	55.2%	-3.7%
India	£926k	35%	+74.7%
Germany	£118k	4.5%	+81%
China	£87k	3.3%	-59.4%
United States	£25k	0.9%	+101%
Italy	£18k	0.7%	—
Indonesia	£8k	0.3%	—
Ukraine	£1k	0.1%	-56.4%

Same subheading in other tariffs

EU Free – 6.5% Third-country duty 3 tariff lines · average 4.3%

Türkiye Free – 6.5% Third-country duty 9 tariff lines · average 5.8%

USA 6.5% General (MFN) 4 tariff lines

World trade in 2024

2921.51 · US$1bn

Trade value (US$) no reported trade < US$181kUS$181k+US$2.2m+US$41.5m+> US$190.1m

Exports: 63

China: US$442.2m
Belgium: US$190.1m
Germany: US$83m
South Korea: US$73.6m
India: US$67.1m
Netherlands: US$41.5m
Thailand: US$28.9m
United States: US$27.4m
Slovakia: US$17m
France: US$6.6m
Saudi Arabia: US$4.4m
Türkiye: US$3.2m
Portugal: US$3.2m
Japan: US$3m
Switzerland: US$2.2m
Italy: US$2m
Taiwan: US$1.9m
Mexico: US$1.8m
Poland: US$1.6m
United Kingdom: US$1.1m
Serbia: US$842.1k
Canada: US$807.6k
Ireland: US$519.2k
United Arab Emirates: US$393k
Spain: US$387.4k
Slovenia: US$380.9k
Latvia: US$340.2k
Australia: US$245.9k
Hong Kong SAR China: US$212.5k
Malaysia: US$181k
Argentina: US$161.2k
Romania: US$148k
Brazil: US$144.4k
Singapore: US$139.9k
Hungary: US$136.7k
Finland: US$133.4k
Luxembourg: US$119.4k
Greece: US$72.2k
Czechia: US$72k
Guatemala: US$51.7k
Indonesia: US$50.2k
Uzbekistan: US$45.1k
Pakistan: US$43.2k
Austria: US$36.1k
Estonia: US$33.7k
Kuwait: US$33.5k
Ukraine: US$28.4k
Iran: US$22.4k
Colombia: US$21.1k
Russia: US$19.4k
Somalia: US$12k
Tanzania: US$9.2k
Sweden: US$6.6k
Bulgaria: US$6k
South Africa: US$4.2k
Peru: US$3.8k
Norway: US$1k
Lithuania: US$700
Kazakhstan: US$100
Chile: US$0

Top exporters

Rank	Country	Value	Share
1	China	US$442.2m	43.9%
2	Belgium	US$190.1m	18.9%
3	Germany	US$83m	8.2%
4	South Korea	US$73.6m	7.3%
5	India	US$67.1m	6.7%
6	Netherlands	US$41.5m	4.1%
7	Thailand	US$28.9m	2.9%
8	United States	US$27.4m	2.7%
9	Slovakia	US$17m	1.7%
10	France	US$6.6m	0.7%

Top importers

Rank	Country	Value	Share
1	United States	US$137.7m	13.7%
2	South Korea	US$87.7m	8.7%
3	India	US$70m	6.9%
4	Japan	US$68.2m	6.8%
5	Netherlands	US$57.9m	5.7%
6	Germany	US$55.7m	5.5%
7	Thailand	US$41m	4.1%
8	Brazil	US$35.6m	3.5%
9	Spain	US$34.5m	3.4%
10	Vietnam	US$31.5m	3.1%

Binding rulings for similar goods 1

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.

N291823 U.S. CBP 15 November 2017 · 2921.51.10.00

The tariff classification of m-phenylenediamine from China

Recent rule changes mentioning this code

Acts whose text cites this code or its heading. Check the act itself: a code can be cited for reasons other than a change of its duty.

Anti-dumping 7 July 2026 · Applies from: 22 December 2025

Commission Implementing Regulation (EU) 2026/1540 of 6 July 2026 imposing a definitive anti-dumping duty on imports of new pneumatic tyres, of rubber, of a kind used on motor cars, buses or lorries with a load index not exceeding 121 (tyres) originating in the People’s Republic of China

CELEX 32026R1540 · Source: eur-lex.europa.eu
Quota 1 July 2026

İthalatta Kota ve Tarife Kontenjanı İdaresine İlişkin Tebliğ (Tebliğ No: 2026/2)’de Değişiklik Yapılmasına Dair Tebliğ (No: 2026/8)

RG 01.07.2026 sayı 33297 · Tebliğ 2026/2 · Source: resmigazete.gov.tr
Quota 30 June 2026 · Applies from: 12 July 2026

Council Regulation (EU) 2026/1465 of 25 June 2026 amending Regulation (EU) 2021/2283 opening and providing for the management of autonomous tariff quotas of the Union for certain agricultural and industrial products

CELEX 32026R1465 · Source: eur-lex.europa.eu
Sanctions 19 May 2026 · Applies from: 20 May 2026

The Russia (Sanctions) (EU Exit) (Amendment) Regulations 2026

S.I. 2026/543 · Source: legislation.gov.uk

Rule changes →

The UK Global Tariff divides subheading 2921.51 into 7 tariff lines; the duty is between 0% and 6% (average 5.1%). 1 of them is duty-free.

In the EU Combined Nomenclature, subheading 2921.51 covers 3 tariff lines and the duty is between 0% and 6.5%. 1 of them is duty-free.

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 Free – 6%.

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

Imports of these goods into the UK came to £2.6m between September 2025 and August 2026 (down 1% on the year before); Belgium supplied 55%, followed by India.

In 2024, countries exported these goods worth US$1bn (−5.5% year on year).

The largest exporter was China (US$442.2m), followed by Belgium.

Questions and answers

What is the HS code for o-, m-, p-Phenylenediamine, diaminotoluenes, and their derivatives; salts thereof?

O-, m-, p-Phenylenediamine, diaminotoluenes, and their derivatives; salts thereof fall under HS subheading 2921.51, part of heading 2921, in section VI of the Harmonized System.

What is the import duty on o-, m-, p-Phenylenediamine, diaminotoluenes, and… in the UK?

Under the UK Global Tariff, imports under 2921.51 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 o-, m-, p-Phenylenediamine, diaminotoluenes, and… in the EU?

Under the EU Combined Nomenclature, imports under 2921.51 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 o-, m-, p-Phenylenediamine, diaminotoluenes, and…?

China, with US$442.2m in 2024 (43.9% of world exports).

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

173 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 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 Belgium (55%), India (35%) and Germany (5%), out of total imports of £2.6m.