Product classification
HS code for Thiuram: 2930.30
Organo-sulphur compounds, thiuram mono-, di- or tetrasulphides.
Classification of thiuram under HS 2930.30
Thiuram compounds are classified under HS code 2930.30, which specifically covers thiuram mono-, di-, or tetrasulphides. These are organo-sulphur compounds where the sulphur atom is bonded to a carbon atom that is also part of a thiocarbonyl group. The classification is determined by the chemical structure of the molecule, falling within Chapter 29 for separate chemically defined organic compounds. Under the General Rules of Interpretation (GRI) 1, the heading text for 2930 explicitly includes organo-sulphur compounds, and the subheading 2930.30 provides the specific designation for thiurams. These chemicals are primarily used in the rubber industry as vulcanization accelerators or as fungicides in agriculture. However, for classification in 2930.30, the product must be a chemically pure or separate chemically defined compound. If the thiuram is mixed with other substances to function as a prepared rubber accelerator, it would move to Chapter 38. The chemical structure must contain the characteristic thiuram group to qualify for this specific subheading. Importers must ensure that the purity levels and the absence of additives meet the criteria for Chapter 29, as the presence of stabilizers or anti-dusting agents is permitted only within strict limits defined by the Chapter Notes.
- Covers
- Tetramethylthiuram disulfide (TMTD)
- Tetraethylthiuram disulfide (TETD)
- Tetramethylthiuram monosulfide (TMTM)
- Dipentamethylenethiuram tetrasulfide
- Thiuram disulphide used as a chemical intermediate
- Also under 2930.30
- Lanxess (for rubber chemicals)
- UPL (for fungicides)
- Chemtura (now part of Lanxess)
- Sumitomo Chemical
Codes often confused with 2930.30
Common mistake. Thiuram is frequently misclassified under HS code 3812.10, which covers prepared rubber accelerators. The distinction lies in whether the product is a single chemically defined compound (2930.30) or a mixture/preparation (3812.10). Additionally, it may be confused with other organo-sulphur compounds in 2930.90 if the specific thiuram structure is not identified.
Top exporters and importers of HS 293030 (the code used for thiuram), 2025
In 2025, the largest exporter of HS 293030 (the code used for thiuram) in UN Comtrade data was China, with 35% of world exports; the largest importer in UN Comtrade data was Brazil, with 16% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 293030, not only thiuram.
Top exporters 2025 · share of world exports
- 1 China $17M 35% of world exports
- 2 Belgium $13M 27% of world exports
- 3 India $6.0M 12% of world exports
World total: $49M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Brazil $8.7M 16% of world imports
- 2 United States $7.5M 14% of world imports
- 3 Germany $3.8M 7.2% of world imports
World total: $53M 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 thiuram
Brazil splits HS 2930.30 into 7 NCM codes. Pick the one that matches your product:
- 2930.30.11Tetramethylthiuram monosulphide
- 2930.30.12Sulfiram (tetraethylthiuram monosulphide)
- 2930.30.19Other thiuram monosulphides
- 2930.30.21Thiram (tetramethylthiuram disulphide)
- 2930.30.22Disulfiram (tetraethylthiuram disulphide)
- 2930.30.29Other thiuram disulphides
- 2930.30.90Thiuram tetrasulphides
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about thiuram
What is the HS code for Thiuram?
The HS code for Thiuram is 293030 (Organo-sulphur compounds; thiuram mono-, di- or tetrasulphides). The HS code for thiuram mono-, di-, or tetrasulphides is 2930.30.
How do I classify Thiuram for customs?
Thiuram is classified under HS code 293030 — Organo-sulphur compounds; thiuram mono-, di- or tetrasulphides. This is a 6-digit subheading level code.
Can thiuram be classified as a pesticide?
While used as a fungicide, if it is a pure chemical, it remains in 2930.30. If it is put up in forms or packings for retail sale as a fungicide, it may be classified under heading 3808.
Which countries are the top exporters of thiuram (HS 293030)?
In 2025, the top exporters of HS 293030 (the code used for thiuram) in UN Comtrade data were China ($17M, 35% of world exports), Belgium ($13M) and India ($6.0M). World exports came to about $49M, 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 thiuram (HS 293030)?
In 2025, the top importers of HS 293030 (the code used for thiuram) in UN Comtrade data were Brazil ($8.7M, 16% of world imports), the United States ($7.5M) and Germany ($3.8M). World imports came to about $53M, 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.
Is the HS code for Thiuram the same in all countries?
The base HS code 293030 for Thiuram is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for thiuram in Brazil?
Brazil splits HS 293030 into 7 NCM codes, so the right one for thiuram depends on the product's details: 2930.30.11 (Tetramethylthiuram monosulphide), 2930.30.12 (Sulfiram (tetraethylthiuram monosulphide)), 2930.30.19 (Other thiuram monosulphides), 2930.30.21 (Thiram (tetramethylthiuram disulphide)), 2930.30.22 (Disulfiram (tetraethylthiuram disulphide)), 2930.30.29 (Other thiuram disulphides), and more.