Product classification
HS code for Dieldrin: 2910.40
Epoxides, epoxyalcohols, epoxyphenols and epoxyethers, with a three-membered ring and their halogenated, sulphonated, nitrated or nitrosated derivatives, dieldrin (ISO, INN).
Classification of dieldrin under HS 2910.40
Dieldrin is classified under HS code 2910.40. This classification falls under Chapter 29 of the Harmonized System, which covers organic chemicals. Specifically, heading 2910 is designated for epoxides, epoxyalcohols, epoxyphenols, and epoxyethers with a three-membered ring, and their halogenated, sulphonated, nitrated, or nitrosated derivatives. Dieldrin is a chlorinated cyclodiene insecticide that contains an epoxide group, which is a cyclic ether with a three-atom ring. Because of its specific chemical structure and its status as a persistent organic pollutant (POP), the Harmonized System provides a dedicated subheading, 2910.40, to facilitate the monitoring and control of its international trade. This is particularly important for compliance with the Rotterdam Convention and the Stockholm Convention. The classification is determined by GRI 1, as the text of the heading and subheading specifically names the substance. Even though Dieldrin is primarily known as an insecticide, it must be classified in Chapter 29 if it is a separate chemically defined compound, rather than in Chapter 38 as a formulated pesticide.
- Covers
- Dieldrin (ISO, INN)
- Technical grade Dieldrin
- Pure Dieldrin crystals
- Dieldrin chemical samples
- Also under 2910.40
- Sigma-Aldrich Dieldrin Standard
- AccuStandard Dieldrin
- Restek Dieldrin Reference
Codes often confused with 2910.40
Common mistake. Dieldrin is frequently misclassified under HS code 3808.91, which covers insecticides put up in forms or packings for retail sale or as preparations. However, if the product is the pure chemical substance, Chapter 29 takes precedence. It is also sometimes confused with 2903.82 (Aldrin), which is a related but chemically distinct halogenated hydrocarbon lacking the epoxide ring.
Top exporters and importers of HS 291040 (the code used for dieldrin), 2025
In 2025, the largest exporter of HS 291040 (the code used for dieldrin) in UN Comtrade data was the United States, with 50% of world exports; the largest importer in UN Comtrade data was Malaysia, with 60% 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 291040, not only dieldrin.
Top exporters 2025 · share of world exports
- 1 United States $86K 50% of world exports
- 2 Poland $38K 22% of world exports
- 3 India $37K 21% of world exports
World total: $172K Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Malaysia $52K 60% of world imports
- 2 Poland $16K 18% of world imports
- 3 Vietnam* ~$7K 8.1% of world imports · partner records ↗
World total: $87K 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 marked * did not, so their figures add up what other countries recorded trading with them, and their exports are valued at buyers' CIF prices. 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 dieldrin
Brazil classifies dieldrin under NCM 2910.40.00: HS 2910.40 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about dieldrin
What is the HS code for Dieldrin?
The HS code for Dieldrin is 291040 (Epoxides, epoxyalcohols, epoxyphenols and epoxyethers; with a three-membered ring and their halogenated, sulphonated, nitrated or nitrosated derivatives, dieldrin (ISO, INN)). The specific HS code for the chemical compound Dieldrin is 2910.40.
How do I classify Dieldrin for customs?
Dieldrin is classified under HS code 291040 — Epoxides, epoxyalcohols, epoxyphenols and epoxyethers; with a three-membered ring and their halogenated, sulphonated, nitrated or nitrosated derivatives, dieldrin (ISO, INN). This is a 6-digit subheading level code.
Why is Dieldrin not classified under insecticides?
If Dieldrin is imported as a pure, separate chemically defined compound, it must be classified in Chapter 29. It only moves to 3808 if it is formulated into a finished pesticide product.
Which countries are the top exporters of dieldrin (HS 291040)?
In 2025, the top exporters of HS 291040 (the code used for dieldrin) in UN Comtrade data were the United States ($86K, 50% of world exports), Poland ($38K) and India ($37K). World exports came to about $172K, 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 dieldrin (HS 291040)?
In 2025, the top importers of HS 291040 (the code used for dieldrin) in UN Comtrade data were Malaysia ($52K, 60% of world imports), Poland ($16K) and Vietnam (about $7K). World imports came to about $87K, 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 Dieldrin the same in all countries?
The base HS code 291040 for Dieldrin 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 dieldrin in Brazil?
In Brazil, dieldrin (HS 291040) is classified under NCM 2910.40.00.