HS code · 6-digit subheading
HS Code 2922.31 – Amino-aldehydes, amino-ketones and amino-quinones; other than those containing more than one kind of oxygen function, salts thereof
HS code 2922.31 is the 6-digit subheading for amino-aldehydes, amino-ketones and amino-quinones, other than those containing more than one kind of oxygen function, salts thereof. It is used for 4-Aminobenzaldehyde, 4-Aminoacetophenone, 2-Amino-1-phenylethanone, 4-Amino-3-methylacetophenone and 2-Amino-5-chlorobenzophenone.
What HS 2922.31 covers
This HS code covers a specific class of organic chemical compounds known as amino-aldehydes, amino-ketones, and amino-quinones, along with their salts. The key defining characteristic is that they contain only one type of oxygen function (e.g., exclusively an aldehyde, ketone, or quinone group, but not a combination like an aldehyde and a hydroxyl). In international trade, these specialized intermediates are crucial building blocks for the synthesis of pharmaceuticals, agrochemicals, and various fine chemicals. Importers are typically chemical manufacturers, pharmaceutical companies, and research institutions seeking specific organic precursors for complex synthesis. Exporters are often countries with advanced chemical industries, particularly those specializing in custom synthesis and specialty chemicals. Key things to know include the stringent purity requirements, especially for pharmaceutical applications, and the regulatory hurdles associated with handling and transporting these often reactive or sensitive compounds. Their trade is driven by innovation in drug discovery and the development of new materials, making them vital components in high-value-added industries globally.
- Covers
- 4-Aminobenzaldehyde
- 4-Aminoacetophenone
- 2-Amino-1-phenylethanone
- 4-Amino-3-methylacetophenone
- 2-Amino-5-chlorobenzophenone
- 1-Aminoanthraquinone
- 2-Amino-4-chlorobenzophenone
- Examples
- Sigma-Aldrich 4-Aminobenzaldehyde
- TCI America 4-Aminoacetophenone
- Merck KGaA 1-Aminoanthraquinone
- Alfa Aesar 2-Amino-1-phenylethanone
Codes often confused with 2922.31
Common mistake. This code might be confused with 292239, which covers similar compounds but specifically excludes certain controlled substances. It could also be mistaken for other amino-compounds in 292250 if the oxygen function is not clearly identified as aldehyde, ketone, or quinone, or if it contains multiple oxygen functions.
Top exporters and importers of HS code 292231, 2025
In 2025, the largest exporter of HS code 292231 in UN Comtrade data was Switzerland, with 37% of world exports; the largest importer in UN Comtrade data was Poland, with 15% 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 Switzerland $3.5M 37% of world exports
- 2 Slovakia $1.1M 11% of world exports
- 3 Germany $948K 10% of world exports
World total: $9.4M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Poland $1.7M 15% of world imports
- 2 Germany $1.3M 11% of world imports
- 3 United Kingdom $1.1M 9.9% of world imports
World total: $12M 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 2922.31 4
Brazil splits HS 2922.31 into 4 NCM codes, Mercosur's 8-digit tariff lines.
- 2922.31.1 Amfepramone and its saltsAnfepramona e seus sais Group
- 2922.31.11 Amfepramone (diethylpropion)Anfepramona
- 2922.31.12 Amfepramone saltsSais
- 2922.31.20 Methadone and its saltsMetadona e seus sais
- 2922.31.30 Normethadone and its saltsNormetadona e seus sais
All Brazil NCM codes in heading 29.22 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 2922.31
What is HS code 292231?
HS code 292231 is a 6-digit subheading in the Harmonized System that covers: Amino-aldehydes, amino-ketones and amino-quinones; other than those containing more than one kind of oxygen function, salts thereof. This HS code covers a specific class of organic chemical compounds known as amino-aldehydes, amino-ketones, and amino-quinones, along with their salts. The key defining characteristic is that they contain only one type of oxygen function (e.g., exclusively an aldehyde, ketone, or quinone group, but not a combination like an aldehyde and a hydroxyl). In international trade, these specialized intermediates are crucial building blocks for the synthesis of pharmaceuticals, agrochemicals, and various fine chemicals. Importers are typically chemical manufacturers, pharmaceutical companies, and research institutions seeking specific organic precursors for complex synthesis. Exporters are often countries with advanced chemical industries, particularly those specializing in custom synthesis and specialty chemicals. Key things to know include the stringent purity requirements, especially for pharmaceutical applications, and the regulatory hurdles associated with handling and transporting these often reactive or sensitive compounds. Their trade is driven by innovation in drug discovery and the development of new materials, making them vital components in high-value-added industries globally.
What products fall under HS code 292231?
4-Aminobenzaldehyde, 4-Aminoacetophenone, 2-Amino-1-phenylethanone, 4-Amino-3-methylacetophenone, 2-Amino-5-chlorobenzophenone, 1-Aminoanthraquinone, 2-Amino-4-chlorobenzophenone
What are common misclassifications for HS code 292231?
This code might be confused with 292239, which covers similar compounds but specifically excludes certain controlled substances. It could also be mistaken for other amino-compounds in 292250 if the oxygen function is not clearly identified as aldehyde, ketone, or quinone, or if it contains multiple oxygen functions.
Which countries are the top exporters of goods under HS code 292231?
In 2025, the top exporters of HS code 292231 in UN Comtrade data were Switzerland ($3.5M, 37% of world exports), Slovakia ($1.1M) and Germany ($948K). World exports came to about $9.4M, 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 292231?
In 2025, the top importers of HS code 292231 in UN Comtrade data were Poland ($1.7M, 15% of world imports), Germany ($1.3M) and the United Kingdom ($1.1M). World imports came to about $12M, 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 292231 structured?
HS code 292231 is a 6-digit subheading under the Harmonized System. The first 2 digits (29) identify the chapter, digits 3-4 (22) identify the heading, and digits 5-6 (31) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 292231?
Brazil splits HS code 292231 into 4 NCM codes: 2922.31.11 (Amfepramone (diethylpropion)), 2922.31.12 (Amfepramone salts), 2922.31.20 (Methadone and its salts), 2922.31.30 (Normethadone and its salts). The first 6 digits of each match the HS code.