HS code · 6-digit subheading

HS Code 2930.90 – Organo-sulphur compounds; n.e.c. in heading no. 2930

HS code 2930.90 is the 6-digit subheading for organo-sulphur compounds, n.e.c. in heading no. 2930. It is used for dimethyl sulfoxide (DMSO), thiourea, mercaptans, thioethers and sulfones.

What HS 2930.90 covers

This "not elsewhere specified" (N.E.C.) HS code serves as a catch-all for a vast array of organo-sulphur compounds that do not have their own specific subheading within HS 2930. This category encompasses a wide range of chemicals, from intermediates for pharmaceuticals and agrochemicals to specialty additives, catalysts, and fine chemicals used across various industries. International trade under this code is highly fragmented, involving numerous specialized chemical manufacturers and distributors. Importers are diverse, including pharmaceutical companies, research institutions, chemical synthesis labs, and manufacturers of polymers, rubber, and plastics. Exporters are typically countries with advanced chemical industries capable of producing complex organic compounds. Key aspects include the sheer diversity of products, which makes detailed analysis challenging, and the fact that many of these compounds are high-value, low-volume specialty chemicals. Compliance with chemical safety regulations and specific end-use restrictions is crucial, as some may have hazardous properties or be precursors for controlled substances.

Covers
  • Dimethyl sulfoxide (DMSO)
  • Thiourea
  • Mercaptans
  • Thioethers
  • Sulfones
  • Sulfoxides
  • Dithiocarbamates
  • Thiophenes
Examples
  • Sigma-Aldrich DMSO
  • BASF Thiourea
  • Arkema Mercaptans
  • TCI Thiophenes
  • Merck Sulfones

Codes often confused with 2930.90

Common mistake. This code is often a default for new or less common organo-sulphur compounds, but care must be taken to ensure they don't fit more specific subheadings within 2930 or other chapters like 2934 (heterocyclic compounds).

29.30Organo-sulphur compounds29.34Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds

Top exporters and importers of HS code 293090, 2025

In 2025, the largest exporter of HS code 293090 in UN Comtrade data was China, with 46% of world exports; the largest importer in UN Comtrade data was the United States, with 12% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.

Top exporters 2025 · share of world exports

  1. 1 China $2.5B
  2. 2 United States $582M
  3. 3 Japan $436M

World total: $5.5B Reported figures on UN Comtrade ↗

Top importers 2025 · share of world imports

  1. 1 United States $773M
  2. 2 Brazil $760M
  3. 3 China $414M

World total: $6.3B Reported figures on UN Comtrade ↗

How these figures are built

109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).

Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.

Brazil NCM codes for 2930.90 48

Brazil splits HS 2930.90 into 48 NCM codes, Mercosur's 8-digit tariff lines.

  1. 2930.90.1 Thiols and their derivatives; salts thereofTióis e seus derivados; sais destes produtos Group
  2. 2930.90.11 Thioglycolic acid and its saltsÁcido tioglicólico e seus sais
  3. 2930.90.12 CysteineCisteína
  4. 2930.90.13 N,N-Dialkyl(C1-C3)-2-aminoethanethiolsN,N-Dialquil-2-aminoetanotiol, com grupos alquila de C1 a C3, e seus sais protonados
  5. 2930.90.19 Other thiols and their derivativesOutros
  6. 2930.90.2 Thioamides and their derivatives; salts thereofTioamidas e seus derivados; sais destes produtos Group
  7. 2930.90.21 ThioureaTioureia
  8. 2930.90.22 Thiophanate-methylTiofanato-Metila
  9. 2930.90.23 4-Methyl-3-thiosemicarbazide4-Metil-3-tiosemicarbazida
  10. 2930.90.29 Other thioamides and their derivativesOutros
  11. 2930.90.3 Thioethers, thioesters and their derivatives, other than the products of item 2930.90.8; salts thereofTioéteres, tioésteres e seus derivados, exceto os produtos do item 2930.90.8; sais destes produtos Group
  12. 2930.90.31 2-(Ethylthio)ethanol, 98% or more2-(Etiltio)etanol, com uma concentração igual ou superior a 98 %, em peso
  13. 2930.90.32 3-(Methylthio)propanal3-(Metiltio)propanal
  14. 2930.90.33 S-Ethyl chlorothioformateClorotioformiato de S-etila
  15. 2930.90.34 2-Hydroxy-4-(methylthio)butanoic acid and Ca saltÁcido 2-hidroxi-4-(metiltio)butanoico e seu sal cálcico
  16. 2930.90.35 MethomylMetomil
  17. 2930.90.36 CarbocisteineCarbocisteína
  18. 2930.90.37 Specified 4-sulphatoethylsulphonyl methoxyanilines4-Sulfatoetilsulfonil-2,5-dimetoxianilina; 4-sulfatoetilsulfonil-2-metoxi-5-metilanilina; 4-sulfatoetilsulfonil-2-metoxianilina
  19. 2930.90.39 Other thioethers, thioesters and derivativesOutros
  20. 2930.90.4 Phosphorothioates and their derivatives; salts thereofFosforotioatos e seus derivados; sais destes produtos Group
  21. 2930.90.41 Amiton and its alkylated or protonated saltsFosforotioato de O,O-dietila e de S-[2-(dietilamino)etila] e seus sais alquilados ou protonados
  22. 2930.90.42 VamidothionFosforotioato de O,O-dimetila e de S-[2-(1-metilcarbamoiletiltio)-etila)] (vamidotion)
  23. 2930.90.43 ProfenofosFosforotioato de O-(4-bromo-2-clorofenila) O-etila e de S-propila (profenofós)
  24. 2930.90.49 Other phosphorothioates and derivativesOutros
  25. 2930.90.5 Phosphorodithioates and their derivatives; salts thereofFosforoditioatos e seus derivados; sais destes produtos Group
  26. 2930.90.51 Phorate (ISO); terbufos (ISO)Forato (ISO); terbufós (ISO)
  27. 2930.90.52 DisulfotonDissulfoton
  28. 2930.90.53 EthionEtion
  29. 2930.90.54 DimethoateDimetoato
  30. 2930.90.57 ThiometonFosforoditioato de O,O-dimetila e de S-[2-(etiltio)etila] (tiometon)
  31. 2930.90.59 Other phosphorodithioates and derivativesOutros
  32. 2930.90.6 Phosphoramidothioates and their derivatives; salts thereofFosforoamidotioatos e seus derivados; sais destes produtos Group
  33. 2930.90.61 AcephateAcefato
  34. 2930.90.69 Other phosphoramidothioates and derivativesOutros
  35. 2930.90.7 SulphonesSulfonas Group
  36. 2930.90.71 TiaprideTiaprida
  37. 2930.90.72 BicalutamideBicalutamida
  38. 2930.90.79 Other sulphonesOutras
  39. 2930.90.8 2-Chloroethyl chloromethyl sulphide; bis(2-chloroethyl) sulphide; bis(2-chloroethylthio)methane; 1,2-bis(2-chloroethylthio)ethane; 1,3-bis(2-chloroethylthio)-n-propane; 1,4-bis(2-chloroethylthio)-n-butane; 1,5-bis(2-chloroethylthio)-n-pentane; bis(2-chloroethylthiomethyl) ether; bis(2-chloroethylthioethyl) etherSulfeto de 2-cloroetila e de clorometila; sulfeto de bis(2-cloroetila); bis(2-cloroetiltio)metano; 1,2-bis(2-cloroetiltio)etano; 1,3-bis(2-cloroetiltio)-n-propano; 1,4-bis(2-cloroetiltio)-n-butano; 1,5-bis(2-cloroetiltio)-n-pentano; óxido de bis(2-cloroetiltiometila); óxido de bis(2-cloroetiltioetila) Group
  40. 2930.90.81 2-Chloroethyl chloromethyl sulphideSulfeto de 2-cloroetila e de clorometila
  41. 2930.90.82 Bis(2-chloroethyl) sulphide (mustard gas)Sulfeto de bis(2-cloroetila)
  42. 2930.90.83 Bis(2-chloroethylthio)methaneBis(2-cloroetiltio)metano
  43. 2930.90.84 1,2-Bis(2-chloroethylthio)ethane1,2-Bis(2-cloroetiltio)etano
  44. 2930.90.85 1,3-Bis(2-chloroethylthio)-n-propane1,3-Bis(2-cloroetiltio)-n-propano
  45. 2930.90.86 1,4-Bis(2-chloroethylthio)-n-butane1,4-Bis(2-cloroetiltio)-n-butano
  46. 2930.90.87 1,5-Bis(2-chloroethylthio)-n-pentane1,5-Bis(2-cloroetiltio)-n-pentano
  47. 2930.90.88 Bis(2-chloroethylthiomethyl) etherÓxido de bis(2-cloroetiltiometila)
  48. 2930.90.89 Bis(2-chloroethylthioethyl) etherÓxido de bis(2-cloroetiltioetila)
  49. 2930.90.9 OtherOutros Group
  50. 2930.90.91 CaptanCaptan
  51. 2930.90.93 Methylene bis(thiocyanate)Metileno-bis-tiocianato
  52. 2930.90.94 DimethylthiophosphoramideDimetiltiofosforamida
  53. 2930.90.95 FonofosEtilditiofosfonato de O-etila e de S-fenila (fonofós)
  54. 2930.90.96 S-Dialkyl(C1-C3)aminoethyl alkylphosphonothioatesHidrogênio alquil(de C1 a C3)fosfonotioatos de [S-2-(dialquil(de C1 a C3)amino)etila], seus ésteres de O-alquila (de até C10, incluindo os cicloalquila); sais alquilados ou protonados destes produtos
  55. 2930.90.97 Other P-(C1-C3)alkyl compounds, no other P-C bondOutros compostos que contenham um átomo de fósforo ligado a um grupo alquila (de C1 a C3) mas sem outros átomos de carbono
  56. 2930.90.98 Dithiocarbonates (xanthates)Ditiocarbonatos (xantatos e xantogenatos)
  57. 2930.90.99 Other organo-sulphur compoundsOutros

All Brazil NCM codes in heading 29.30 →

Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.

Questions about HS 2930.90

What is HS code 293090?

HS code 293090 is a 6-digit subheading in the Harmonized System that covers: Organo-sulphur compounds; n.e.c. in heading no. 2930. This "not elsewhere specified" (N.E.C.) HS code serves as a catch-all for a vast array of organo-sulphur compounds that do not have their own specific subheading within HS 2930. This category encompasses a wide range of chemicals, from intermediates for pharmaceuticals and agrochemicals to specialty additives, catalysts, and fine chemicals used across various industries. International trade under this code is highly fragmented, involving numerous specialized chemical manufacturers and distributors. Importers are diverse, including pharmaceutical companies, research institutions, chemical synthesis labs, and manufacturers of polymers, rubber, and plastics. Exporters are typically countries with advanced chemical industries capable of producing complex organic compounds. Key aspects include the sheer diversity of products, which makes detailed analysis challenging, and the fact that many of these compounds are high-value, low-volume specialty chemicals. Compliance with chemical safety regulations and specific end-use restrictions is crucial, as some may have hazardous properties or be precursors for controlled substances.

What products fall under HS code 293090?

Dimethyl sulfoxide (DMSO), Thiourea, Mercaptans, Thioethers, Sulfones, Sulfoxides, Dithiocarbamates, Thiophenes

What are common misclassifications for HS code 293090?

This code is often a default for new or less common organo-sulphur compounds, but care must be taken to ensure they don't fit more specific subheadings within 2930 or other chapters like 2934 (heterocyclic compounds).

Which countries are the top exporters of goods under HS code 293090?

In 2025, the top exporters of HS code 293090 in UN Comtrade data were China ($2.5B, 46% of world exports), the United States ($582M) and Japan ($436M). World exports came to about $5.5B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

Which countries are the top importers of goods under HS code 293090?

In 2025, the top importers of HS code 293090 in UN Comtrade data were the United States ($773M, 12% of world imports), Brazil ($760M) and China ($414M). World imports came to about $6.3B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

How is HS code 293090 structured?

HS code 293090 is a 6-digit subheading under the Harmonized System. The first 2 digits (29) identify the chapter, digits 3-4 (30) identify the heading, and digits 5-6 (90) specify the subheading. This code is standardized globally by the World Customs Organization.

What is the Brazil NCM code for HS code 293090?

Brazil splits HS code 293090 into 48 NCM codes: 2930.90.11 (Thioglycolic acid and its salts), 2930.90.12 (Cysteine), 2930.90.13 (N,N-Dialkyl(C1-C3)-2-aminoethanethiols), 2930.90.19 (Other thiols and their derivatives), 2930.90.21 (Thiourea), 2930.90.22 (Thiophanate-methyl), 2930.90.23 (4-Methyl-3-thiosemicarbazide), 2930.90.29 (Other thioamides and their derivatives), and more listed on this page. The first 6 digits of each match the HS code.