HS 291050 Endrin (ISO)
Quick Answer: HS code 291050 specifically covers Endrin (ISO), a highly toxic organochlorine insecticide. This chemical is primarily used in agricultural applications, though its use is severely restricted or banned in many countries due to environmental and health concerns. For importers and exporters, understanding these restrictions is paramount. Duty rates vary significantly: the UK applies a 0.00% ad valorem duty. The EU imposes a 5.50% ad valorem duty. In the US, the Most Favored Nation (MFN) rate is 4.8% ad valorem, with numerous preferential programs offering duty-free entry (e.g., under agreements with Australia, Chile, Korea, and Singapore). However, a higher Column 2 rate of 31% applies to non-MFN countries. Due to its hazardous nature, trade in Endrin is subject to stringent import/export controls and licensing requirements under international conventions like the Stockholm Convention on Persistent Organic Pollutants. Importers must verify compliance with all national and international regulations before engaging in trade.
What Are the Import Duty Rates?
🇬🇧 United Kingdom
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2910500000 | 0.00 % | — | — |
🇪🇺 European Union (TARIC)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2910500000 | 5.50 % | — | — |
🇺🇸 United States (HTSUS)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2910500000 | 4.8% | Free (18 programs) | ["kg"] |
Special rates available under trade agreements including USMCA, KORUS, GSP.
Duty rates sourced from the USITC (US International Trade Commission) Harmonized Tariff Schedule (HTS) (accessed 2/22/2026), EU TARIC – DG TAXUD (Directorate-General for Taxation and Customs Union) (accessed 2/22/2026), and UK Trade Tariff – HMRC (His Majesty's Revenue and Customs) (accessed 2/22/2026).
Data compiled and presented by HSRates.
Which Trade Agreements Reduce Duties for HS 2910.50?
Imports of Endrin (ISO) may qualify for reduced or zero duty rates under free trade agreements and preferential programs. The overview below shows available preferential arrangements by jurisdiction, compiled by HSRates from official tariff and trade agreement data.
United States (HTSUS)
Free for USMCA, KORUS, GSP, and 15 other programs
European Union (TARIC)
Preferential rate data not yet available.
United Kingdom
Preferential rate data not yet available.
Preferential rates require proof of origin and may be subject to quotas or conditions. Always verify eligibility with a licensed customs broker.
Data compiled by HSRates.
Which Preferential Rates Apply to Your Origin Country?
Select an origin country to see if preferential rates apply.
Preferential rates based on available trade agreements. Actual rates may vary.
How Has Trade Volume Developed?
How to Classify This HS Code?
What products does HS 291050 cover?
This subheading covers Endrin (ISO), which is a specific organochlorine insecticide. Endrin is chemically defined as (1R,4S,4aS,5R,6R,7S,8S,8aR)-1,2,3,4,10,10-hexachloro-1,4,4a,5,6,7,8,8a-octahydro-6,7-epoxy-1,4:5,8-dimethanonaphthalene. It is a cyclodiene insecticide and a stereoisomer of dieldrin. The WCO Harmonized System Explanatory Notes for Chapter 29, specifically Heading 2910, confirm the classification of epoxides, epoxyalcohols, epoxyphenols, and epoxyethers with a three-membered ring. Endrin, being an epoxide, falls precisely within the scope of this subheading, as detailed in the USITC Harmonized Tariff Schedule of the United States (HTSUS) and the EU TARIC system.
What falls outside HS 291050?
The following products are excluded from HS 291050: other epoxides that are not Endrin (ISO), even if they possess similar chemical structures or insecticidal properties. For instance, Dieldrin (ISO), a stereoisomer of endrin, is classified under HS 291040. Aldrin (ISO), another related cyclodiene insecticide, falls under HS 291030. Furthermore, mixtures containing Endrin, where Endrin is not the predominant component or where the mixture constitutes a preparation for specific uses (e.g., formulated pesticides ready for retail sale), would typically be classified elsewhere, potentially in Chapter 38, depending on their composition and intended use, as per General Interpretative Rule (GRI) 3(b).
What are common classification mistakes for HS 291050?
A common error is misclassifying other cyclodiene insecticides or related epoxides under HS 291050, mistaking them for Endrin. For example, classifying Dieldrin (HS 291040) or Aldrin (HS 291030) as Endrin due to their structural similarities and shared insecticidal class is a frequent mistake. Another error involves classifying formulated pesticide preparations containing Endrin under this subheading, rather than under Chapter 38 (e.g., 3808.91 for insecticides), which is incorrect as per GRI 3(b) for mixtures and preparations. Importers must ensure the precise chemical identity of the substance matches "Endrin (ISO)" and that it is not a formulated product.
How should importers classify products under HS 291050?
The correct procedure for classifying products under HS 291050 requires meticulous attention to the chemical identity. Importers and customs brokers must verify that the product is unequivocally "Endrin (ISO)," meaning it matches the specific chemical structure and nomenclature. This often necessitates reviewing the Certificate of Analysis (CoA) or Safety Data Sheet (SDS) provided by the manufacturer, which should clearly state the chemical name, CAS number (72-20-8 for Endrin), and purity. If the product is a mixture or preparation, General Interpretative Rule 3 must be applied to determine the correct heading, often leading to classification in Chapter 38 if it's a formulated pesticide. Consulting the WCO Explanatory Notes for Chapter 29 and relevant national tariff schedules (e.g., USITC HTSUS, EU TARIC) is crucial for accurate classification.
Which HS Codes Are Related?
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FAQ
What is the Most Favored Nation (MFN) duty rate for HS code 291050 (Endrin (ISO)) when importing into the United States?
For imports into the United States, the Most Favored Nation (MFN) duty rate for HS code 291050.00.00 (Endrin (ISO)) is 3.5% ad valorem under the Harmonized Tariff Schedule of the United States (HTSUS), General subheading. This rate applies to goods from countries with which the U.S. maintains normal trade relations, unless a specific preferential program applies. (Source: USITC HTSUS, Chapter 29, Subheading 2910.50.00)
Are there any preferential duty rates available for Endrin (ISO) under HS 291050 when imported into the United States, and which trade agreements are relevant?
Yes, preferential duty rates are available for HS 291050 (Endrin (ISO)) when imported into the United States, depending on the country of origin and applicable trade agreements. For example, goods originating from countries such as Australia (AU), Bahrain (BH), Chile (CL), Colombia (CO), Israel (IL), Jordan (JO), Korea (KR), Morocco (MA), Oman (OM), Panama (PA), Peru (PE), and Singapore (SG) may be eligible for a 'Free' duty rate under respective Free Trade Agreements (FTAs). Importers should verify the specific FTA rules of origin and provide the necessary documentation (e.g., certificate of origin) to claim these preferential rates. (Source: USITC HTSUS, General Notes and specific FTA chapters)
What are the key classification criteria for Endrin (ISO) under HS code 291050, and what distinguishes it from other epoxides?
HS code 291050 specifically covers 'Endrin (ISO)'. The key classification criterion is the chemical identity of the substance. Endrin is a chlorinated hydrocarbon insecticide, specifically a stereoisomer of dieldrin, characterized by its specific chemical structure as an epoxide. It falls under Chapter 29, which covers organic chemicals, and more specifically under heading 2910 for 'Epoxides, epoxyalcohols, epoxyphenols and epoxyethers, with a three-membered ring, and their halogenated, sulphonated, nitrated or nitrosated derivatives'. The 'ISO' designation indicates it is the International Organization for Standardization accepted common name for the chemical. Importers must ensure that the product's chemical name and structure precisely match the description for accurate classification. (Source: WCO Harmonized System Explanatory Notes, Chapter 29)
What specific documentation is required for importing Endrin (ISO) under HS 291050, considering its nature as a pesticide?
Given that Endrin (ISO) is a pesticide, importers will likely face stringent regulatory requirements beyond standard customs documentation. In the United States, imports of pesticides are regulated by the Environmental Protection Agency (EPA) under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA). Importers must typically provide an EPA Notice of Arrival (NOA) and ensure the product is registered with the EPA, or qualifies for an exemption. Additional documentation may include a Safety Data Sheet (SDS), Certificate of Analysis, and any permits or licenses required by other government agencies. For preferential duty claims, a valid Certificate of Origin is also essential. Failure to comply with EPA regulations can result in significant penalties and refusal of entry. (Source: U.S. EPA, U.S. Customs and Border Protection)