Product classification
HS code for Thiodiglycol: 2930.70
Organo-sulphur compounds, bis(2-hydroxyethyl)sulfide (thiodiglycol (INN)).
Classification of thiodiglycol under HS 2930.70
Thiodiglycol, chemically known as bis(2-hydroxyethyl)sulfide, is classified under HS code 2930.70. As an organo-sulphur compound, it is placed within Chapter 29 (Organic chemicals) and heading 2930. This heading is reserved for compounds that contain a sulfur atom bonded directly to a carbon atom. Thiodiglycol is specifically identified in the Harmonized System nomenclature under its own subheading due to its significance in industrial chemistry and its status as a precursor chemical under international monitoring. The classification is straightforward under GRI 1, as the chemical name is explicitly mentioned in the subheading text. It is a colorless to pale yellow liquid used extensively as a solvent in the textile industry for dye applications and as an intermediate in the production of various chemical products, including lubricants and plastics. Because it is a separate chemically defined compound, it must be classified in Chapter 29 regardless of its intended industrial application, provided it does not contain additives that make it a prepared mixture.
- Covers
- Thiodiglycol (INN)
- Bis(2-hydroxyethyl)sulfide
- 2,2'-Thiodiethanol
- Technical grade thiodiglycol
- Also under 2930.70
- Sigma-Aldrich Thiodiglycol
- BASF Thiodiglycol
- Merck Thiodiglycol
- TCI Thiodiglycol
Codes often confused with 2930.70
Common mistake. Thiodiglycol can be misclassified under HS code 2905.39 (Other diols) because of its glycol-like structure. However, because it contains a sulfur atom, Note 6 to Chapter 29 requires it to be classified as an organo-sulphur compound under 2930. It may also be confused with other organo-sulphur compounds in 2930.90, but since the 2017 HS updates, it has its own specific code at 2930.70.
Top exporters and importers of HS 293070 (the code used for thiodiglycol), 2025
In 2025, the largest exporter of HS 293070 (the code used for thiodiglycol) in UN Comtrade data was Germany, with 73% of world exports; the largest importer in UN Comtrade data was the United States, with 53% 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 293070, not only thiodiglycol.
Top exporters 2025 · share of world exports
- 1 Germany $3.1M 73% of world exports
- 2 China $565K 13% of world exports
- 3 United States $391K 9.2% of world exports
World total: $4.2M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $2.1M 53% of world imports
- 2 South Korea $919K 23% of world imports
- 3 France $213K 5.4% of world imports
World total: $3.9M 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 code for thiodiglycol
Brazil classifies thiodiglycol under NCM 2930.70.00: HS 2930.70 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about thiodiglycol
What is the HS code for Thiodiglycol?
The HS code for Thiodiglycol is 293070 (Organo-sulphur compounds; bis(2-hydroxyethyl)sulfide (thiodiglycol (INN))). The specific HS code for thiodiglycol (bis(2-hydroxyethyl)sulfide) is 2930.70.
How do I classify Thiodiglycol for customs?
Thiodiglycol is classified under HS code 293070 — Organo-sulphur compounds; bis(2-hydroxyethyl)sulfide (thiodiglycol (INN)). This is a 6-digit subheading level code.
Is thiodiglycol subject to international trade restrictions?
Yes, thiodiglycol is a Schedule 3 chemical under the Chemical Weapons Convention (CWC) and may require specific export licenses or declarations.
Which countries are the top exporters of thiodiglycol (HS 293070)?
In 2025, the top exporters of HS 293070 (the code used for thiodiglycol) in UN Comtrade data were Germany ($3.1M, 73% of world exports), China ($565K) and the United States ($391K). World exports came to about $4.2M, 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 thiodiglycol (HS 293070)?
In 2025, the top importers of HS 293070 (the code used for thiodiglycol) in UN Comtrade data were the United States ($2.1M, 53% of world imports), South Korea ($919K) and France ($213K). World imports came to about $3.9M, 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 Thiodiglycol the same in all countries?
The base HS code 293070 for Thiodiglycol 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 thiodiglycol in Brazil?
In Brazil, thiodiglycol (HS 293070) is classified under NCM 2930.70.00.