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European Union tariff line 2933 39 99 81: 4-Hydroxy-3-pyridinesulphonic acid (CAS RN 51498-37-4) with a purity by weight of 98 % or more

Last updated

Landed cost with 2933.39.99.81Classify a product

Key facts

Tariff line
2933 39 99 81
Covers
Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure, 4-Hydroxy-3-pyridinesulphonic acid (CAS RN 51498-37-4) with a purity by weight of 98 % or more
Duty (MFN)
6.5%
Preferential rates
From 0% (58 programmes or origins)
Additional duties
None recorded
Restrictions
None recorded
Import VAT/GST in the European Union
VAT 21%
De minimis in the European Union
Flat €3 duty up to €150; tax always charged
Tariff
European Union
HS subheading
2933.39

Summary

In the European Union tariff, line 2933 39 99 81 covers compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure, 4-Hydroxy-3-pyridinesulphonic acid (CAS RN 51498-37-4) with a purity by weight of 98 % or more. The general (MFN) duty rate is 6.5%. It falls under HS subheading 2933.39 in heading 29.33 (chapter 29).

What this line covers

In the European Union tariff, line 2933 39 99 81 covers compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure, 4-Hydroxy-3-pyridinesulphonic acid (CAS RN 51498-37-4) with a purity by weight of 98 % or more.

Its legal text is “4-Hydroxy-3-pyridinesulphonic acid (CAS RN 51498-37-4) with a purity by weight of 98 % or more”, read under “Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure”, “Other” and “Other”.

How it is structured

It falls under HS subheading 2933.39 in heading 29.33 (chapter 29). The first six digits are the Harmonized System code; the 4 digits after them are added by the European Union tariff.

Chapter 29
Organic chemicals
Heading 29.33
Heterocyclic compounds with nitrogen hetero-atom(s) only
Subheading 2933.39
Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure
Within the subheading
Other
Within the subheading
Other
Line 2933 39 99 81
4-Hydroxy-3-pyridinesulphonic acid (CAS RN 51498-37-4) with a purity by weight of 98 % or more

Duty

The general (MFN) duty rate is 6.5%.

Duty-free entry applies to goods that qualify under 5 programmes, and to goods from 52 origins.

A preferential rate of 5.2% applies to goods from Mercosur.

Preferential rates for 2933 39 99 81
Preferential rateProgramme or origin
0%EU-Switzerland agreement: re-imported goods (1007)
0%CARIFORUM (1033)
0%Eastern and Southern Africa States (1034)
0%SADC EPA (1035)
0%Preferential origin in accordance with the Agreement in the form of an Exchange of Letters between the European Union and the Kingdom of Morocco on the amendment of Protocols 1 and 4 to the Euro-Mediterranean Agreement establishing an association between the European Communities and their Member St… (2000)
0%GSP-EBA (Special arrangement for the least-developed countries - Everything But Arms) (2005)
0%EEA - European Economic Area (2012)
0%GSP - General arrangements (2020)
0%GSP+ (incentive arrangement for sustainable development and good governance) (2027)
0%OCTs (Overseas Countries and Territories) (2080)
0%Central America (2200)
0%Andorra (AD)
0%Albania (AL)
0%Bosnia and Herzegovina (BA)
0%Canada (CA)
0%Switzerland (CH)
0%Côte d'Ivoire (CI)
0%Chile (CL)
0%Cameroon (CM)
0%Colombia (CO)
0%Algeria (DZ)
0%Ecuador (EC)
0%Egypt (EG)
0%Fiji (FJ)
0%Faroe Islands (FO)
0%United Kingdom (GB)
0%Georgia (GE)
0%Ghana (GH)
0%Israel (IL)
0%Jordan (JO)
0%Japan (JP)
0%Kenya (KE)
0%South Korea (KR)
0%Lebanon (LB)
0%Morocco (MA)
0%Moldova (MD)
0%Montenegro (ME)
0%North Macedonia (MK)
0%Mexico (MX)
0%New Zealand (NZ)
0%Peru (PE)
0%Papua New Guinea (PG)
0%Palestine (PS)
0%Solomon Islands (SB)
0%Singapore (SG)
0%Syria (SY)
0%Tunisia (TN)
0%Türkiye (TR)
0%Ukraine (UA)
0%United States (US)
0%Vietnam (VN)
0%Samoa (WS)
0%a group of origins (TARIC area XC) (XC)
0%Kosovo (XK)
0%a group of origins (TARIC area XL) (XL)
0%Serbia (XS)
0%South Africa (ZA)
5.2%Mercosur (5500)

Import VAT and de minimis in the European Union

The European Union charges VAT on imports at a standard rate of 21%.

From 1 July 2026 until 1 July 2028, consignments sold to buyers in the European Union worth up to €150 pay a flat customs duty of €3 per tariff classification in the consignment instead of the tariff rate. Import tax is charged whatever the value.

Everything about importing into European Union

Other lines under 2933.39

  • 2933 39 10 00Iproniazid (INN); ketobemidone hydrochloride (INNM); pyridostigmine bromide (INN)
  • 2933 39 20 002,3,5,6-Tetrachloropyridine
  • 2933 39 25 003,6-Dichloropyridine-2-carboxylic acid
  • 2933 39 35 002-Hydroxyethylammonium-3,6-dichloropyridine-2-carboxylate
  • 2933 39 40 002-Butoxyethyl(3,5,6-trichloro-2-pyridyloxy)acetate
  • 2933 39 45 003,5-Dichloro-2,4,6-trifluoropyridine
  • 2933 39 50 00Fluroxypyr (ISO), methyl ester
  • 2933 39 55 004-Methylpyridine
  • 2933 39 99 01N-phenylpiperidin-4-amine (4-AP) (CAS RN 23056-29-3)
  • 2933 39 99 02Tert-butyl 4-anilinopiperidine-1-carboxylate (1-boc-4-AP) (CAS RN 125541-22-2)
  • 2933 39 99 03N-phenyl-N-(piperidin-4-yl)propanamide (norfentanyl) (CAS RN 1609-66-1)
  • 2933 39 99 04Methyl 4-aminopicolinate (CAS RN 71469-93-7) with a purity by weight of 98 % or more
  • 2933 39 99 052,6-Bis-[1-(2-tert-butylphenylimino)-ethyl]pyridine (CAS RN 204203-17-8) with a purity by weight of 95 % or more
  • 2933 39 99 06Tert-butyl (3S)-3-hydroxypiperidine-1-carboxylate (CAS RN 143900-44-1) with a purity by weight of 97 % or more
  • 2933 39 99 075-Bromo-2-methoxypyridine (CAS RN 13472-85-0) with a purity by weight of 99 % or more
  • 2933 39 99 08Fluazinam (ISO) (CAS RN 79622-59-6) with a purity by weight of 97 % or more
  • 2933 39 99 092-(2-Pyridyl)ethanol (CAS RN 103-74-2) with a purity by weight of 99 % or more
  • 2933 39 99 102-Aminopyridin-4-ol hydrochloride (CAS RN 1187932-09-7)
  • 2933 39 99 112-(Chloromethyl)-4-(3-methoxypropoxy)-3-methylpyridine hydrochloride(CAS RN 153259-31-5)
  • 2933 39 99 122,3-Dichloropyridine (CAS RN 2402-77-9)
  • 2933 39 99 13Imazamox (ISO) (CAS RN 114311-32-9) with a purity by weight of 95 % or more
  • 2933 39 99 15(S)-6-Bromo-2-(4-(3-(1,3-dioxoisoindolin-2-yl)propyl)-2,2-dimethylpyrrolidin-1-yl)nicotinamide (CAS RN 2606972-45-4) with a purity by weight of 98 % or more
  • 2933 39 99 16Tert-butyl (3R)-3-aminopiperidine-1-carboxylate (CAS RN 188111-79-7) with a purity by weight of 96 % or more
  • 2933 39 99 172,4-Dichloro-3-nitropyridine (CAS RN 5975-12-2) with a purity by weight of 99 % or more
  • 2933 39 99 18Perfluorophenyl 6-fluoropyridine-2-sulfonate (CAS RN 2608048-81-1) with a purity by weight of 98 % or more
  • 2933 39 99 195-Chloro-1-(4-piperidyl)-1H-benzimidazol-2(3H)-one (CAS RN 53786-28-0) with a purity by weight of 99 % or more
  • 2933 39 99 22N-(5-bromo-3-methylpyridin-2-yl)-N-methylbenzamide (CAS RN 446299-80-5) with a purity by weight of 98 % or more
  • 2933 39 99 242-Chloromethyl-4-methoxy-3,5-dimethylpyridine hydrochloride (CAS RN 86604-75-3)
  • 2933 39 99 27Pyridine-2,6-dicarboxylic acid (CAS RN 499-83-2)
  • 2933 39 99 28Ethyl-3-[(3-amino-4-methylamino-benzoyl)-pyridin-2-yl-amino]-propionate (CAS RN 212322-56-0)
  • 2933 39 99 312-(Chloromethyl)-3-methyl-4-(2,2,2-trifluoroethoxy)pyridine hydrochloride(CAS RN 127337-60-4)
  • 2933 39 99 322-(Chloromethyl)-3,4-dimethoxypyridine hydrochloride (CAS RN 72830-09-2)
  • 2933 39 99 335-(3-chlorophenyl)-3-methoxypyridine-2-carbonitrile (CAS RN 1415226-39-9)
  • 2933 39 99 34Pyridin-3-ol (CAS RN 109-00-2) with a purity by weight of 98 % or more
  • 2933 39 99 35Aminopyralid (ISO) (CAS RN 150114-71-9)
  • 2933 39 99 361-[2-[5-Methyl-3-(trifluoromethyl)-1H-pyrazol-1-yl]acetyl]piperidine-4-carbothioamide (CAS RN 1003319-95-6)
  • 2933 39 99 37Aqueous solution of pyridine-2-thiol-1-oxide, sodium salt (CAS RN 3811-73-2)
  • 2933 39 99 38(2-chloropyridin-3-yl) methanol (CAS RN 42330-59-6)
  • 2933 39 99 402-Hydroxypyridine-N-oxide (CAS RN 13161-30-3) with a purity by weight of 98 % or more
  • 2933 39 99 42Glasdegib maleate (INN) (CAS RN 2030410-25-2) with a purity by weight of 98 % or more
  • 2933 39 99 44Fluroxypyr-meptyl (CAS RN 81406-37-3) with a purity by weight of 95 % or more
  • 2933 39 99 452,4-Dichloropyridine-3-carboxaldehyde (CAS RN 134031-24-6) with a purity by weight of 95 % or more
  • 2933 39 99 46Fluopicolide (ISO) (CAS RN 239110-15-7) with a content by weight of 97% or more
  • 2933 39 99 47(-)-trans-4-(4'-Fluorophenyl)-3-hydroxymethyl-N-methylpiperidine (CAS RN 105812-81-5)
  • 2933 39 99 48Flonicamid (ISO) (CAS RN 158062-67-0)
  • 2933 39 99 492-Phenyl-2-(2-pyridyl)acetamide (CAS RN 7251-52-7) with a purity by weight of 98 % or more
  • 2933 39 99 50N,4-Dimethyl-1-(phenylmethyl)- 3-piperidinamine hydrochloride (1:2) (CAS RN 1228879-37-5) with a purity by weight of 98 % or more
  • 2933 39 99 512-Amino-3-bromo-5-nitropyridine (CAS RN 15862-31-4) with a purity by weight of 98 % or more
  • 2933 39 99 535-Methyl-2-pyridylamine (CAS RN 1603-41-4) with a purity by weight of 99 % or more
  • 2933 39 99 542,5-Dichloro-4,6-dimethylpyridine-3-carbonitrile (CAS RN 91591-63-8) with a purity by weight of 99 % or more
  • 2933 39 99 55Pyriproxyfen (ISO) (CAS RN 95737-68-1) of a purity by weight of 97 % or more
  • 2933 39 99 562-[[[3-Methyl-4-(2,2,2-trifluoroethoxy)pyridin-2-yl]methyl]sulfanyl]1H-benzimidazole (CAS RN 103577-40-8) with a purity by weight of 99 % or more
  • 2933 39 99 57Tert-butyl 3-(6-amino-3-methylpyridin-2-yl)benzoate (CAS RN 1083057-14-0)
  • 2933 39 99 58Tert-butyl N-[5-(trifluoromethyl)pyridin-3-yl]carbamate (CAS RN 1187055-61-3) with a purity by weight of 98 % or more
  • 2933 39 99 602-Fluoro-6-(trifluoromethyl)pyridine (CAS RN 94239-04-0)
  • 2933 39 99 62Ethyl 2,6-Dichloronicotinate (CAS RN 58584-86-4)
  • 2933 39 99 631-Methyl-4-piperidone (CAS RN 1445-73-4) with a purity by weight of 97 % or more
  • 2933 39 99 65Acetamiprid (ISO) (CAS RN 135410-20-7)
  • 2933 39 99 66(2S,4S)-4-Ethoxy-2-[4-(methoxycarbonyl)phenyl]piperidin-1-ium(2Z)-3-carboxyprop-2-enoate (CAS RN 2408761-21-5) with a purity by weight of 98 % or more
  • 2933 39 99 681-(3-Chloropyridin-2-yl)-3-[[5-(trifluoromethyl)-2H-tetrazol-2-yl]methyl]-1H-pyrazole-5-carboxylic acid (CAS RN 1352319-02-8) with a purity by weight of 85 % or more
  • 2933 39 99 702,3-Dichloro-5-trifluoromethylpyridine, (CAS RN 69045-84-7)
  • 2933 39 99 72N-[(1S,5R)-8-Benzyl-8-azabicyclo[3.2.1]octane-3-yl]-2-methylpropanamide (CAS RN 376348-67-3) with a purity by weight of 98 % or more
  • 2933 39 99 736-Chloro-4-(4-fluoro-2-methylphenyl)pyridin-3-amine hydrochloride
  • 2933 39 99 75Clodinafop-propargyl (ISO) (CAS RN 105512-06-9) with a purity by weight of 90 % or more
  • 2933 39 99 76Apalutamide (INN) (CAS RN 956104-40-8)
  • 2933 39 99 78Niraparib tosylate monohydrate (INNM) (CAS RN 1613220-15-7)
  • 2933 39 99 80Tert-Butyl (3R)-3-(4-amino-2-oxo-2,3-dihydro-1H-imidazo[4, 5-c]pyridin-1-yl)piperidine-1-carboxylate (CAS RN 1971921-33-1) with a purity by weight of 95 % or more
  • 2933 39 99 82Picloram (ISO) (CAS RN 1918-02-1) containing by weight not more than 15 % of water and with a dry weight purity of 92 % or more
  • 2933 39 99 84Diethyl(3-pyridyl)borane (CAS RN 89878-14-8) with a purity by weight of 98 % or more
  • 2933 39 99 852-Chloro-5-chloromethylpyridine (CAS RN 70258-18-3)
  • 2933 39 99 88(1R,2S,4R)-2-Benzhydrylquinuclidin-3-one (2R,3R)-2,3-dihydroxysuccinate (CAS RN 683206-54-4) with a purity by weight of 98 % or more
  • 2933 39 99 891-Benzyl-4-phenylpiperidine-4-carbonitrile monohydrochloride (CAS RN 71258-18-9) with a purity by weight of 98 % or more
  • 2933 39 99 91Piperidin-4-one CAS No 41661-47-6
  • 2933 39 99 92Tert-butyl 4-oxopiperidine-1-carboxylate CAS No 79099-07-3
  • 2933 39 99 93Boscalid (ISO) (CAS RN 188425-85-6) with a purity by weight of 98 % or more
  • 2933 39 99 94Cyantraniliprole (ISO) (CAS RN 736994-63-1) with a purity by weight of 90 % or more
  • 2933 39 99 95Fluopyram (ISO) (CAS RN 658066-35-4) with a purity by weight of 96,5 % or more
  • 2933 39 99 99Other

In other countries

National tariff lines under 2933.39 are live on border.bot for the United States (15 lines, also used by 1 other country).

The Harmonized System text for 2933.39

Frequently asked questions

What does tariff line 2933 39 99 81 cover in the European Union tariff?

In the European Union tariff, line 2933 39 99 81 covers compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure, 4-Hydroxy-3-pyridinesulphonic acid (CAS RN 51498-37-4) with a purity by weight of 98 % or more.

What is the general (MFN) duty on 2933 39 99 81 in the European Union?

The general (MFN) duty rate is 6.5%.

Which preferential rates apply to 2933 39 99 81?

Duty-free entry applies to goods that qualify under 5 programmes: EU-Switzerland agreement: re-imported goods, Preferential origin in accordance with the Agreement in the form of an Exchange of Letters between the European Union and the Kingdom of Morocco on the amendment of Protocols 1 and 4 to the Euro-Mediterranean Agreement establishing an association between the European Communities and their Member St…, EEA - European Economic Area, a group of origins (TARIC area XC) and a group of origins (TARIC area XL), and to goods from CARIFORUM, the Eastern and Southern Africa States, SADC EPA, GSP-EBA (Special arrangement for the least-developed countries - Everything But Arms), GSP - General arrangements, GSP+ (incentive arrangement for sustainable development and good governance), OCTs (Overseas Countries and Territories), Central America, Andorra, Albania, Bosnia and Herzegovina, Canada, Switzerland, Côte d'Ivoire, Chile, Cameroon, Colombia, Algeria, Ecuador, Egypt, Fiji, the Faroe Islands, the United Kingdom, Georgia, Ghana, Israel, Jordan, Japan, Kenya, South Korea, Lebanon, Morocco, Moldova, Montenegro, North Macedonia, Mexico, New Zealand, Peru, Papua New Guinea, Palestine, the Solomon Islands, Singapore, Syria, Tunisia, Türkiye, Ukraine, the United States, Vietnam, Samoa, Kosovo, Serbia and South Africa. A preferential rate of 5.2% applies to goods from Mercosur.

Sources and updates

The tariff lines for the European Union come from border.bot release 1, read from the publisher’s files, and have been live since 11 October 2026.

The duty rates for the European Union come from border.bot release 1, read from the publisher’s files, and have been live since 11 October 2026.

The trade programmes for the European Union come from border.bot release 1, read from the publisher’s files, and have been live since 11 October 2026.

The import taxes for the European Union come from border.bot release 1, imported from a file, and have been live since 9 October 2026.

The de minimis thresholds for the European Union come from border.bot release 2, entered by border.bot, and have been live since 11 October 2026.

This page was last updated on 11 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

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