HS code · 6-digit subheading
HS Code 2921.21 – Amine-function compounds; acyclic polyamines and their derivatives, ethylenediamine and its salts
HS code 2921.21 is the 6-digit subheading for amine-function compounds, acyclic polyamines and their derivatives, ethylenediamine and its salts. It is used for ethylenediamine, ethylenediamine dihydrochloride, N,N'-Dimethylethylenediamine and N,N-Diethylethylenediamine.
What HS 2921.21 covers
This HS code specifically covers ethylenediamine (EDA) and its salts, which are acyclic polyamines characterized by two amine functional groups. EDA is a foundational chemical intermediate with extensive industrial applications. It is primarily traded by large chemical manufacturers, producers of chelating agents, polymer manufacturers, and pharmaceutical companies. Ethylenediamine is a versatile building block used in the production of various products, including resins, lubricants, corrosion inhibitors, fungicides, and as a curing agent for epoxy resins. Its international trade is driven by its broad utility across multiple sectors, requiring careful handling due to its corrosive and sensitizing properties, and adherence to industrial safety and environmental regulations.
- Covers
- Ethylenediamine
- Ethylenediamine dihydrochloride
- N,N'-Dimethylethylenediamine
- N,N-Diethylethylenediamine
- Examples
- Dow Chemical (ethylenediamine)
- BASF (ethylenediamine)
- Huntsman Corporation (ethylenediamine derivatives)
Codes often confused with 2921.21
Common mistake. This code can be confused with other polyamines under 292129 if the specific chemical is not ethylenediamine, or with 29211x (monoamines) if the presence of multiple amine groups is overlooked.
Top exporters and importers of HS code 292121, 2025
In 2025, the largest exporter of HS code 292121 in UN Comtrade data was Saudi Arabia, with 32% of world exports; the largest importer in UN Comtrade data was India, with 21% 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 Saudi Arabia $99M 32% of world exports
- 2 Belgium $52M 17% of world exports
- 3 China $43M 14% of world exports
World total: $307M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 India $59M 21% of world imports
- 2 Germany $38M 14% of world imports
- 3 China $28M 9.9% of world imports
World total: $284M 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 2921.21
Brazil does not split HS 2921.21: its NCM code is 2921.21.00.
All Brazil NCM codes in heading 29.21 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 2921.21
What is HS code 292121?
HS code 292121 is a 6-digit subheading in the Harmonized System that covers: Amine-function compounds; acyclic polyamines and their derivatives, ethylenediamine and its salts. This HS code specifically covers ethylenediamine (EDA) and its salts, which are acyclic polyamines characterized by two amine functional groups. EDA is a foundational chemical intermediate with extensive industrial applications. It is primarily traded by large chemical manufacturers, producers of chelating agents, polymer manufacturers, and pharmaceutical companies. Ethylenediamine is a versatile building block used in the production of various products, including resins, lubricants, corrosion inhibitors, fungicides, and as a curing agent for epoxy resins. Its international trade is driven by its broad utility across multiple sectors, requiring careful handling due to its corrosive and sensitizing properties, and adherence to industrial safety and environmental regulations.
What products fall under HS code 292121?
Ethylenediamine, Ethylenediamine dihydrochloride, N,N'-Dimethylethylenediamine, N,N-Diethylethylenediamine
What are common misclassifications for HS code 292121?
This code can be confused with other polyamines under 292129 if the specific chemical is not ethylenediamine, or with 29211x (monoamines) if the presence of multiple amine groups is overlooked.
Which countries are the top exporters of goods under HS code 292121?
In 2025, the top exporters of HS code 292121 in UN Comtrade data were Saudi Arabia ($99M, 32% of world exports), Belgium ($52M) and China ($43M). World exports came to about $307M, 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 292121?
In 2025, the top importers of HS code 292121 in UN Comtrade data were India ($59M, 21% of world imports), Germany ($38M) and China ($28M). World imports came to about $284M, 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 292121 structured?
HS code 292121 is a 6-digit subheading under the Harmonized System. The first 2 digits (29) identify the chapter, digits 3-4 (21) identify the heading, and digits 5-6 (21) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 292121?
In Brazil, HS code 292121 is NCM 2921.21.00. The last two digits are 00 because Brazil does not split this HS code further.