HS code · 6-digit subheading
HS Code 2934.20 – Heterocyclic compounds; containing in the structure, a benzothiazole ring-system (whether or not hydrogenated), not further fused
HS code 2934.20 is the 6-digit subheading for heterocyclic compounds, containing in the structure, a benzothiazole ring-system (whether or not hydrogenated), not further fused. It is used for 2-Mercaptobenzothiazole, benzothiazole, 2-Aminobenzothiazole, 6-Methoxybenzothiazole and 2-Chlorobenzothiazole.
What HS 2934.20 covers
Benzothiazole compounds are a significant class of heterocyclic chemicals widely utilized across various industrial sectors, particularly in pharmaceuticals, dyes, and rubber accelerators. Their unique chemical structure, incorporating both benzene and thiazole rings, imparts diverse biological and material properties. Countries with robust chemical manufacturing and pharmaceutical industries, such as China, India, Germany, and the USA, are major importers, using these compounds as intermediates for synthesizing active ingredients or specialized additives. Exporters are typically chemical producers in these same regions, often specializing in fine chemicals. Key aspects of their trade include stringent quality control for pharmaceutical applications, compliance with environmental regulations for their use in dyes and rubber, and the need for specialized handling due to their chemical nature. The demand is driven by innovation in drug discovery, the textile industry, and the automotive sector, where rubber products are essential.
- Covers
- 2-Mercaptobenzothiazole
- Benzothiazole
- 2-Aminobenzothiazole
- 6-Methoxybenzothiazole
- 2-Chlorobenzothiazole
- Benzothiazole-2-thiol
- Examples
- MBT (Mercaptobenzothiazole, rubber accelerator)
- Ziram (fungicide component)
- Thioflavin T (fluorescent dye)
- Riluzole (ALS drug component)
Codes often confused with 2934.20
Common mistake. This code can be confused with 2934.10 (unfused thiazole rings) if the benzene ring fusion is overlooked, or with 2934.99 for other unspecified heterocyclic compounds, especially if the specific benzothiazole structure isn't clearly defined.
Top exporters and importers of HS code 293420, 2025
In 2025, the largest exporter of HS code 293420 in UN Comtrade data was China, with 61% of world exports; the largest importer in UN Comtrade data was the United States, with 15% 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 China $339M 61% of world exports
- 2 Belgium $96M 17% of world exports
- 3 United States $33M 6.0% of world exports
World total: $552M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $80M 15% of world imports
- 2 Brazil $43M 8.3% of world imports
- 3 Germany $31M 6.0% of world imports
World total: $518M 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 2934.20 9
Brazil splits HS 2934.20 into 9 NCM codes, Mercosur's 8-digit tariff lines.
- 2934.20.10 2-Mercaptobenzothiazole and its salts2-Mercaptobenzotiazol e seus sais
- 2934.20.20 Benzothiazyl disulphide (MBTS)2,2'-Ditio-bis(benzotiazol) (dissulfeto de benzotiazila)
- 2934.20.3 Benzothiazole sulphenamidesBenzotiazol sulfenamidas Group
- 2934.20.31 N-tert-Butylbenzothiazole sulphenamide (TBBS)2-(Terbutilaminotio)benzotiazol (N-terbutil-benzotiazol-sulfenamida)
- 2934.20.32 N-Cyclohexylbenzothiazole sulphenamide (CBS)2-(Cicloexilaminotio)benzotiazol (N-cicloexil-benzotiazol-sulfenamida)
- 2934.20.33 N,N-Dicyclohexylbenzothiazole sulphenamide2-(Dicicloexilaminotio)benzotiazol (N,N-dicicloexil-benzotiazol-sulfenamida)
- 2934.20.34 N-Oxydiethylenebenzothiazole sulphenamide (MBS)2-(4-Morfoliniltio)benzotiazol (N-oxidietileno-benzotiazol-sulfenamida)
- 2934.20.39 Other benzothiazole sulphenamidesOutras
- 2934.20.40 2-(Thiocyanomethylthio)benzothiazole (TCMTB)2-(Tiocianometiltio)benzotiazol (TCMTB)
- 2934.20.90 Other benzothiazole ring compoundsOutros
All Brazil NCM codes in heading 29.34 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 2934.20
What is HS code 293420?
HS code 293420 is a 6-digit subheading in the Harmonized System that covers: Heterocyclic compounds; containing in the structure, a benzothiazole ring-system (whether or not hydrogenated), not further fused. Benzothiazole compounds are a significant class of heterocyclic chemicals widely utilized across various industrial sectors, particularly in pharmaceuticals, dyes, and rubber accelerators. Their unique chemical structure, incorporating both benzene and thiazole rings, imparts diverse biological and material properties. Countries with robust chemical manufacturing and pharmaceutical industries, such as China, India, Germany, and the USA, are major importers, using these compounds as intermediates for synthesizing active ingredients or specialized additives. Exporters are typically chemical producers in these same regions, often specializing in fine chemicals. Key aspects of their trade include stringent quality control for pharmaceutical applications, compliance with environmental regulations for their use in dyes and rubber, and the need for specialized handling due to their chemical nature. The demand is driven by innovation in drug discovery, the textile industry, and the automotive sector, where rubber products are essential.
What products fall under HS code 293420?
2-Mercaptobenzothiazole, Benzothiazole, 2-Aminobenzothiazole, 6-Methoxybenzothiazole, 2-Chlorobenzothiazole, Benzothiazole-2-thiol
What are common misclassifications for HS code 293420?
This code can be confused with 2934.10 (unfused thiazole rings) if the benzene ring fusion is overlooked, or with 2934.99 for other unspecified heterocyclic compounds, especially if the specific benzothiazole structure isn't clearly defined.
Which countries are the top exporters of goods under HS code 293420?
In 2025, the top exporters of HS code 293420 in UN Comtrade data were China ($339M, 61% of world exports), Belgium ($96M) and the United States ($33M). World exports came to about $552M, 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 293420?
In 2025, the top importers of HS code 293420 in UN Comtrade data were the United States ($80M, 15% of world imports), Brazil ($43M) and Germany ($31M). World imports came to about $518M, 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 293420 structured?
HS code 293420 is a 6-digit subheading under the Harmonized System. The first 2 digits (29) identify the chapter, digits 3-4 (34) identify the heading, and digits 5-6 (20) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 293420?
Brazil splits HS code 293420 into 9 NCM codes: 2934.20.10 (2-Mercaptobenzothiazole and its salts), 2934.20.20 (Benzothiazyl disulphide (MBTS)), 2934.20.31 (N-tert-Butylbenzothiazole sulphenamide (TBBS)), 2934.20.32 (N-Cyclohexylbenzothiazole sulphenamide (CBS)), 2934.20.33 (N,N-Dicyclohexylbenzothiazole sulphenamide), 2934.20.34 (N-Oxydiethylenebenzothiazole sulphenamide (MBS)), 2934.20.39 (Other benzothiazole sulphenamides), 2934.20.40 (2-(Thiocyanomethylthio)benzothiazole (TCMTB)), and more listed on this page. The first 6 digits of each match the HS code.