Product classification
HS code for Ethylenediamine: 2921.21
Amine-function compounds, acyclic polyamines and their derivatives, ethylenediamine and its salts.
Classification of ethylenediamine under HS 2921.21
Ethylenediamine is classified under HS code 2921.21 because it is an acyclic polyamine. Chapter 29 of the Harmonized System covers organic chemicals, and heading 2921 is dedicated to amine-function compounds. Within this heading, the sub-classification 2921.21 specifically identifies ethylenediamine and its salts. This classification is determined by the chemical's molecular structure, which consists of two amine groups attached to an ethane backbone (C2H8N2). As a primary aliphatic diamine, it serves as a critical intermediate in the production of chelating agents like EDTA, surfactants, and synthetic resins. The Harmonized System requires that pure organic compounds be classified based on their specific chemical identity, and 2921.21 provides a dedicated entry for this substance, ensuring uniform international trade documentation and duty application.
- Covers
- Pure ethylenediamine
- Ethylenediamine dihydrochloride
- Ethylenediamine sulfate
- Ethylenediamine phosphate
- Aqueous solutions of ethylenediamine (provided they are not formulated for specific end-uses)
- Also under 2921.21
- Dow Chemical (ethylenediamine)
- BASF (ethylenediamine)
- Huntsman Corporation (ethylenediamine derivatives)
Codes often confused with 2921.21
Common mistake. Ethylenediamine is frequently confused with other polyamines. A common error is classifying it under HS code 2921.22, which is reserved for hexamethylenediamine and its salts. While both are acyclic polyamines, the carbon chain length differs significantly. Another common misclassification occurs with HS code 2921.29, which is a residual category for other acyclic polyamines and their derivatives. If the product is a derivative rather than a simple salt, such as diethylenetriamine, it must be moved to 2921.29. Additionally, if ethylenediamine is prepared as a stabilizer for other chemicals, it might be misclassified under Chapter 38.
Top exporters and importers of HS 292121 (the code used for ethylenediamine), 2025
In 2025, the largest exporter of HS 292121 (the code used for ethylenediamine) 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.
Figures cover everything classified under HS 292121, not only ethylenediamine.
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 ethylenediamine
Brazil classifies ethylenediamine under NCM 2921.21.00: HS 2921.21 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about ethylenediamine
What is the HS code for Ethylenediamine?
The HS code for Ethylenediamine is 292121 (Amine-function compounds; acyclic polyamines and their derivatives, ethylenediamine and its salts). The specific HS code for ethylenediamine and its salts is 2921.21.
How do I classify Ethylenediamine for customs?
Ethylenediamine is classified under HS code 292121 — Amine-function compounds; acyclic polyamines and their derivatives, ethylenediamine and its salts. This is a 6-digit subheading level code.
Are salts of ethylenediamine classified differently?
No, both the base chemical and its various salts (such as the hydrochloride or sulfate forms) are included under the same HS code 2921.21.
Which countries are the top exporters of ethylenediamine (HS 292121)?
In 2025, the top exporters of HS 292121 (the code used for ethylenediamine) 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 ethylenediamine (HS 292121)?
In 2025, the top importers of HS 292121 (the code used for ethylenediamine) 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.
Is the HS code for Ethylenediamine the same in all countries?
The base HS code 292121 for Ethylenediamine 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 ethylenediamine in Brazil?
In Brazil, ethylenediamine (HS 292121) is classified under NCM 2921.21.00.