HS code · 6-digit subheading
HS Code 2921.43 – Amine-function compounds; aromatic monoamines and their derivatives, toluidines and their derivatives; salts thereof
HS code 2921.43 is the 6-digit subheading for amine-function compounds, aromatic monoamines and their derivatives, toluidines and their derivatives, salts thereof. It is used for o-Toluidine, m-Toluidine, p-Toluidine, N,N-dimethyl-p-toluidine and 2-chloro-p-toluidine.
What HS 2921.43 covers
This HS code covers toluidines and their derivatives, including their salts. Toluidines are methyl-substituted anilines, existing as ortho-, meta-, and para-isomers, each with distinct chemical properties. They serve as important intermediates in the synthesis of a wide range of products, including dyes, pigments, pharmaceuticals, and agrochemicals. The specific isomeric form of toluidine dictates its application, making precise identification crucial for trade. Importers are typically specialty chemical manufacturers and pharmaceutical companies, while exporters are often large chemical producers. Trade is driven by demand for specific colorants, drug precursors, and agricultural active ingredients, with purity and isomeric composition being paramount.
- Covers
- O-Toluidine
- M-Toluidine
- P-Toluidine
- N,N-dimethyl-p-toluidine
- 2-chloro-p-toluidine
- Toluidine hydrochloride
- 5-chloro-o-toluidine
- Examples
- Clariant (dyes using toluidines)
- Lonza (pharmaceutical intermediates)
- BASF (pigment precursors)
- Sigma-Aldrich (research chemicals)
- Tokyo Chemical Industry (fine chemicals)
Codes often confused with 2921.43
Common mistake. May be confused with other aromatic monoamines (292149) or even aniline derivatives (292142) if the specific 'toluidine' structure, characterized by a methyl group on the benzene ring, is not recognized.
Top exporters and importers of HS code 292143, 2025
In 2025, the largest exporter of HS code 292143 in UN Comtrade data was China, with 41% of world exports; the largest importer in UN Comtrade data was Australia, with 18% 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 China $90M 41% of world exports
- 2 Italy $38M 17% of world exports
- 3 India $33M 15% of world exports
World total: $219M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Australia $43M 18% of world imports
- 2 United States $43M 18% of world imports
- 3 India $27M 11% of world imports
World total: $243M 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 2921.43 6
Brazil splits HS 2921.43 into 6 NCM codes, Mercosur's 8-digit tariff lines.
- 2921.43.1 Toluidines and their saltsToluidinas e seus sais Group
- 2921.43.11 o-Toluidineo-Toluidina
- 2921.43.19 Other toluidines and their saltsOutros
- 2921.43.2 Toluidine derivatives; salts thereofDerivados das toluidinas; sais destes produtos Group
- 2921.43.21 3-Nitro-4-toluidine and its salts3-Nitro-4-toluidina e seus sais
- 2921.43.22 TrifluralinTrifluralina
- 2921.43.23 4-Chloro-2-toluidine4-Cloro-2-toluidina
- 2921.43.29 Other toluidine derivatives and their saltsOutros
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 2921.43
What is HS code 292143?
HS code 292143 is a 6-digit subheading in the Harmonized System that covers: Amine-function compounds; aromatic monoamines and their derivatives, toluidines and their derivatives; salts thereof. This HS code covers toluidines and their derivatives, including their salts. Toluidines are methyl-substituted anilines, existing as ortho-, meta-, and para-isomers, each with distinct chemical properties. They serve as important intermediates in the synthesis of a wide range of products, including dyes, pigments, pharmaceuticals, and agrochemicals. The specific isomeric form of toluidine dictates its application, making precise identification crucial for trade. Importers are typically specialty chemical manufacturers and pharmaceutical companies, while exporters are often large chemical producers. Trade is driven by demand for specific colorants, drug precursors, and agricultural active ingredients, with purity and isomeric composition being paramount.
What products fall under HS code 292143?
o-Toluidine, m-Toluidine, p-Toluidine, N,N-dimethyl-p-toluidine, 2-chloro-p-toluidine, Toluidine hydrochloride, 5-chloro-o-toluidine
What are common misclassifications for HS code 292143?
May be confused with other aromatic monoamines (292149) or even aniline derivatives (292142) if the specific 'toluidine' structure, characterized by a methyl group on the benzene ring, is not recognized.
Which countries are the top exporters of goods under HS code 292143?
In 2025, the top exporters of HS code 292143 in UN Comtrade data were China ($90M, 41% of world exports), Italy ($38M) and India ($33M). World exports came to about $219M, 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 292143?
In 2025, the top importers of HS code 292143 in UN Comtrade data were Australia ($43M, 18% of world imports), the United States ($43M) and India ($27M). World imports came to about $243M, 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 292143 structured?
HS code 292143 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 (43) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 292143?
Brazil splits HS code 292143 into 6 NCM codes: 2921.43.11 (o-Toluidine), 2921.43.19 (Other toluidines and their salts), 2921.43.21 (3-Nitro-4-toluidine and its salts), 2921.43.22 (Trifluralin), 2921.43.23 (4-Chloro-2-toluidine), 2921.43.29 (Other toluidine derivatives and their salts). The first 6 digits of each match the HS code.