HS code · 6-digit subheading

HS Code 2921.22 – Amine-function compounds; acyclic polyamines and their derivatives, hexamethylenediamine and its salts

HS code 2921.22 is the 6-digit subheading for amine-function compounds, acyclic polyamines and their derivatives, hexamethylenediamine and its salts. It is used for hexamethylenediamine, hexamethylenediamine dihydrochloride and N,N'-Diacetylhexamethylenediamine.

What HS 2921.22 covers

This HS code specifically covers hexamethylenediamine (HMDA) and its salts, an acyclic polyamine with six carbon atoms between its two amine groups. HMDA is a critical monomer, predominantly traded by polymer manufacturers, especially those involved in nylon production, and specialty chemical producers. Its most significant application is as a key building block for Nylon 6,6, a widely used synthetic polymer known for its strength and durability in textiles, plastics, and engineering applications. HMDA is also utilized in the production of coatings, adhesives, and cross-linking agents. International trade in HMDA is characterized by large-volume transactions, driven by the global demand for nylon and other HMDA-derived products, with a strong focus on consistent quality and supply chain reliability.

Covers
  • Hexamethylenediamine
  • Hexamethylenediamine dihydrochloride
  • N,N'-Diacetylhexamethylenediamine
Examples
  • Invista (HMDA for Nylon 6,6)
  • Ascend Performance Materials (HMDA for Nylon 6,6)
  • BASF (HMDA production)

Codes often confused with 2921.22

Common mistake. This code is very specific; misclassification might occur with other polyamines under 292129 if the chemical is not hexamethylenediamine, or with 292121 (ethylenediamine) if the carbon chain length is not correctly identified.

2921.29Amine-function compounds; acyclic polyamines and their derivatives, and salts thereof, n.e.c. in item no. 2921.22921.21Amine-function compounds; acyclic polyamines and their derivatives, ethylenediamine and its salts

Top exporters and importers of HS code 292122, 2025

In 2025, the largest exporter of HS code 292122 in UN Comtrade data was the United States, with 44% of world exports; the largest importer in UN Comtrade data was Germany, with 31% 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. 1 United States $480M
  2. 2 France $479M
  3. 3 China $40M

World total: $1.1B Reported figures on UN Comtrade ↗

Top importers 2025 · share of world imports

  1. 1 Germany $314M
  2. 2 Japan $191M
  3. 3 Canada $95M

World total: $1.0B 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 2921.22

Brazil does not split HS 2921.22: its NCM code is 2921.22.00.

  1. 2921.22.00 Hexamethylenediamine and its saltsHexametilenodiamina e seus sais

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 2921.22

What is HS code 292122?

HS code 292122 is a 6-digit subheading in the Harmonized System that covers: Amine-function compounds; acyclic polyamines and their derivatives, hexamethylenediamine and its salts. This HS code specifically covers hexamethylenediamine (HMDA) and its salts, an acyclic polyamine with six carbon atoms between its two amine groups. HMDA is a critical monomer, predominantly traded by polymer manufacturers, especially those involved in nylon production, and specialty chemical producers. Its most significant application is as a key building block for Nylon 6,6, a widely used synthetic polymer known for its strength and durability in textiles, plastics, and engineering applications. HMDA is also utilized in the production of coatings, adhesives, and cross-linking agents. International trade in HMDA is characterized by large-volume transactions, driven by the global demand for nylon and other HMDA-derived products, with a strong focus on consistent quality and supply chain reliability.

What products fall under HS code 292122?

Hexamethylenediamine, Hexamethylenediamine dihydrochloride, N,N'-Diacetylhexamethylenediamine

What are common misclassifications for HS code 292122?

This code is very specific; misclassification might occur with other polyamines under 292129 if the chemical is not hexamethylenediamine, or with 292121 (ethylenediamine) if the carbon chain length is not correctly identified.

Which countries are the top exporters of goods under HS code 292122?

In 2025, the top exporters of HS code 292122 in UN Comtrade data were the United States ($480M, 44% of world exports), France ($479M) and China ($40M). World exports came to about $1.1B, 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 292122?

In 2025, the top importers of HS code 292122 in UN Comtrade data were Germany ($314M, 31% of world imports), Japan ($191M) and Canada ($95M). World imports came to about $1.0B, 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 292122 structured?

HS code 292122 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 (22) specify the subheading. This code is standardized globally by the World Customs Organization.

What is the Brazil NCM code for HS code 292122?

In Brazil, HS code 292122 is NCM 2921.22.00. The last two digits are 00 because Brazil does not split this HS code further.