HS code · 6-digit subheading
HS Code 2933.32 – Heterocyclic compounds; containing an unfused pyridine ring (whether or not hydrogenated) in the structure, piperidine and its salts
HS code 2933.32 is the 6-digit subheading for heterocyclic compounds, containing an unfused pyridine ring (whether or not hydrogenated) in the structure, piperidine and its salts. It is used for piperidine, piperidine hydrochloride, N-Methylpiperidine, 4-Piperidone and 2-Piperidinecarboxylic acid.
What HS 2933.32 covers
This HS code specifically covers Piperidine and its salts, which are heterocyclic compounds containing an unfused, hydrogenated pyridine (piperidine) ring. Piperidine is a crucial intermediate in the synthesis of a wide range of pharmaceuticals, agrochemicals, and rubber chemicals. As a saturated heterocyclic amine, it serves as a versatile building block for various organic compounds, particularly in the creation of complex drug molecules and specialized polymers. Its trade is primarily driven by the pharmaceutical and chemical manufacturing sectors, with companies importing and exporting bulk quantities for use in complex synthesis pathways. It also finds niche applications as a solvent or catalyst in certain industrial processes.
- Covers
- Piperidine
- Piperidine hydrochloride
- N-Methylpiperidine
- 4-Piperidone
- 2-Piperidinecarboxylic acid
- Examples
- Piperidine from Sigma-Aldrich
- industrial-grade piperidine from chemical suppliers
- specific research-grade piperidine derivatives
Codes often confused with 2933.32
Common mistake. Often confused with pyridine (293331) due to structural similarity, but piperidine is the hydrogenated (saturated) form, which is a key distinction for classification.
Top exporters and importers of HS code 293332, 2025
In 2025, the largest exporter of HS code 293332 in UN Comtrade data was India, with 57% of world exports; the largest importer in UN Comtrade data was Brazil, 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 India $29M 57% of world exports
- 2 United Kingdom $5.0M 10% of world exports
- 3 Germany $3.8M 7.7% of world exports
World total: $50M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Brazil $6.6M 15% of world imports
- 2 India $6.3M 15% of world imports
- 3 Switzerland $5.5M 13% of world imports
World total: $43M 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 2933.32
Brazil does not split HS 2933.32: its NCM code is 2933.32.00.
All Brazil NCM codes in heading 29.33 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 2933.32
What is HS code 293332?
HS code 293332 is a 6-digit subheading in the Harmonized System that covers: Heterocyclic compounds; containing an unfused pyridine ring (whether or not hydrogenated) in the structure, piperidine and its salts. This HS code specifically covers Piperidine and its salts, which are heterocyclic compounds containing an unfused, hydrogenated pyridine (piperidine) ring. Piperidine is a crucial intermediate in the synthesis of a wide range of pharmaceuticals, agrochemicals, and rubber chemicals. As a saturated heterocyclic amine, it serves as a versatile building block for various organic compounds, particularly in the creation of complex drug molecules and specialized polymers. Its trade is primarily driven by the pharmaceutical and chemical manufacturing sectors, with companies importing and exporting bulk quantities for use in complex synthesis pathways. It also finds niche applications as a solvent or catalyst in certain industrial processes.
What products fall under HS code 293332?
Piperidine, Piperidine hydrochloride, N-Methylpiperidine, 4-Piperidone, 2-Piperidinecarboxylic acid
What are common misclassifications for HS code 293332?
Often confused with pyridine (293331) due to structural similarity, but piperidine is the hydrogenated (saturated) form, which is a key distinction for classification.
Which countries are the top exporters of goods under HS code 293332?
In 2025, the top exporters of HS code 293332 in UN Comtrade data were India ($29M, 57% of world exports), the United Kingdom ($5.0M) and Germany ($3.8M). World exports came to about $50M, 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 293332?
In 2025, the top importers of HS code 293332 in UN Comtrade data were Brazil ($6.6M, 15% of world imports), India ($6.3M) and Switzerland ($5.5M). World imports came to about $43M, 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 293332 structured?
HS code 293332 is a 6-digit subheading under the Harmonized System. The first 2 digits (29) identify the chapter, digits 3-4 (33) identify the heading, and digits 5-6 (32) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 293332?
In Brazil, HS code 293332 is NCM 2933.32.00. The last two digits are 00 because Brazil does not split this HS code further.