HS 290371 Halogenated derivatives of acyclic hydrocarbons containing two or more different halogens

Quick Answer: HS code 290371 covers halogenated derivatives of acyclic hydrocarbons that contain at least two different halogen elements (fluorine, chlorine, bromine, iodine). This includes compounds like chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs), though many are now restricted due to environmental regulations. For importers and exporters, understanding these specific chemical compositions is crucial for correct classification. Duty rates vary significantly: the UK applies a 4.00% ad valorem rate, while the EU's TARIC system shows a 5.50% ad valorem rate. In the US, the general rate is 3.7% ad valorem, but numerous preferential programs (e.g., A, AU, CL, KR, SG) offer duty-free entry. A 25% rate applies to non-market economies. Importers must verify product eligibility for preferential tariffs and be aware of potential import restrictions or licensing requirements related to environmental treaties like the Montreal Protocol.

What Are the Import Duty Rates?

🇬🇧 United Kingdom

Code MFN Preferential Unit
2903710000 4.00 %

🇪🇺 European Union (TARIC)

Code MFN Preferential Unit
2903710000 5.50 %

🇺🇸 United States (HTSUS)

Code MFN Preferential Unit
2903710100 3.7% Free (17 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 2903.71?

Imports of Halogenated derivatives of acyclic hydrocarbons containing two or more different halogens 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 14 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 to Classify This HS Code?

What products does HS 290371 cover?

This subheading covers halogenated derivatives of acyclic hydrocarbons that contain two or more different halogens, meaning the molecule must have at least two distinct types of halogen atoms (e.g., both chlorine and fluorine, or bromine and iodine) attached to an acyclic hydrocarbon chain. This specific classification is derived from the Harmonized System Nomenclature, as interpreted by the World Customs Organization (WCO), and is consistently applied across national tariffs such as the US Harmonized Tariff Schedule (HTSUS) and the EU TARIC. Examples include bromochlorodifluoromethane (BCF) and chlorodifluoromethane, provided they meet the multi-halogen requirement. The acyclic nature of the hydrocarbon backbone is a critical defining characteristic for inclusion here.

What falls outside HS 290371?

The following products are excluded from HS 290371: halogenated derivatives of acyclic hydrocarbons containing only one type of halogen, which would be classified in other subheadings under Heading 2903, such as 2903.11 for chloromethane or 2903.21 for bromomethane. Furthermore, cyclic halogenated hydrocarbons, even if they contain multiple different halogens, are excluded and classified under subheadings like 2903.81 (for 1,2,3,4,5,6-hexachlorocyclohexane). Polymers of halogenated hydrocarbons, such as polytetrafluoroethylene (PTFE), are also excluded from Chapter 29 entirely and typically fall under Chapter 39 as plastics. Products that are not derivatives of acyclic hydrocarbons, but perhaps contain halogens in other functional groups, would also be excluded.

What are common classification mistakes for HS 290371?

A common error is misclassifying single-halogenated acyclic hydrocarbons into HS 290371, failing to recognize the explicit requirement for "two or more different halogens." For instance, chlorodifluoromethane (HCFC-22), which contains only chlorine and fluorine but is often confused due to its multiple halogen atoms, would be incorrectly placed here if the "different halogens" criterion is overlooked; it actually falls under 2903.73. Another mistake involves classifying cyclic halogenated compounds here, ignoring the "acyclic hydrocarbons" restriction. Proper application of General Interpretative Rule (GRI) 1, which dictates classification according to the terms of the headings and any relative section or chapter notes, is crucial to avoid these errors, ensuring the specific chemical structure is accurately assessed against the subheading's precise wording.

How should importers classify products under HS 290371?

The correct procedure for classifying products under HS 290371 involves a meticulous review of the chemical structure to confirm the presence of an acyclic hydrocarbon backbone and, critically, the attachment of at least two distinct types of halogen atoms (e.g., fluorine and chlorine, or bromine and iodine). Importers and customs brokers should obtain the Chemical Abstracts Service (CAS) number and the full chemical name, along with the structural formula, from the manufacturer. This information should then be cross-referenced with the WCO Explanatory Notes for Heading 2903 and the specific subheading 2903.71, as well as official tariff schedules like the USITC HTSUS or EU TARIC, to ensure precise alignment with the legal text and established interpretations. Consulting a qualified customs broker or obtaining a binding ruling from the relevant customs authority (e.g., CBP in the US) is recommended for complex or ambiguous cases.

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FAQ

What are the standard Most Favored Nation (MFN) import duty rates for HS 2903.71, and how do preferential trade agreements affect these rates?

The standard Most Favored Nation (MFN) import duty rates for products classified under HS 2903.71, 'Halogenated derivatives of acyclic hydrocarbons containing two or more different halogens,' typically range. For example, the United States imposes a General duty rate of 4.0% ad valorem on goods from non-preferential countries. The European Union's TARIC database indicates a standard third-country duty rate of 5.50% ad valorem. The UK Global Tariff also lists a 5.50% ad valorem rate for MFN imports. However, significant duty reductions or eliminations are available under various free trade agreements (FTAs). For instance, imports into the US 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 qualify for a 'Free' duty rate under respective FTAs (e.g., US-Australia FTA, KORUS FTA). Importers should consult the specific trade agreement and provide appropriate certificates of origin (e.g., a Free Trade Agreement Certificate of Origin) to claim these preferential rates. Goods from certain countries may also face higher duties, such as the 25% ad valorem rate applied to goods from countries subject to specific Section 301 tariffs in the US, if applicable to this product category.

What are the key classification criteria for products under HS 2903.71, distinguishing them from other halogenated hydrocarbons?

HS 2903.71 specifically covers 'Halogenated derivatives of acyclic hydrocarbons containing two or more different halogens.' The critical classification criteria are: 1) Acyclic Hydrocarbon Base: The parent hydrocarbon structure must be acyclic (open-chain), not cyclic or aromatic. 2) Halogenation: The compound must contain halogen atoms (Fluorine, Chlorine, Bromine, Iodine) substituted onto the acyclic hydrocarbon. 3) Multiple Different Halogens: Crucially, the compound must contain at least two different types of halogen atoms. For example, a compound containing both chlorine and fluorine (e.g., chlorofluorocarbons like HCFC-225cb) would classify here, whereas a compound containing only chlorine (e.g., carbon tetrachloride, CCl4) would fall under HS 2903.14. This distinction is vital for accurate classification, as compounds with only one type of halogen are classified in other subheadings within HS 2903 (e.g., 2903.1 to 2903.6). Importers should ensure their product's chemical name and CAS number clearly indicate the presence of two or more distinct halogens on an acyclic backbone.

What specific documentation is required for importing goods classified under HS 2903.71, particularly concerning chemical regulations?

Beyond standard customs documentation such as the commercial invoice, packing list, and bill of lading/air waybill, imports under HS 2903.71 may require additional documentation due to their chemical nature and potential environmental impact. For instance, in the United States, these substances may be subject to regulations under the Toxic Substances Control Act (TSCA), requiring a TSCA certification statement (positive or negative) on the entry summary. If the substance is an ozone-depleting substance (ODS) or a substitute for an ODS, it may be subject to reporting and permitting requirements by the Environmental Protection Agency (EPA) under the Clean Air Act. Similarly, the EU's REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) regulation may require pre-registration or registration for imported quantities exceeding certain thresholds. Importers should also be prepared to provide a Safety Data Sheet (SDS) for the product, which details its chemical composition, hazards, and safe handling procedures. It is advisable to consult with a customs broker or regulatory specialist to ensure compliance with all applicable chemical control laws in the importing country.

Are there any common trade agreements or special programs that specifically impact the import of halogenated derivatives under HS 2903.71?

Yes, numerous free trade agreements (FTAs) and special trade programs significantly impact the import duties for HS 2903.71. For example, the United States has FTAs with countries like Australia, Bahrain, Chile, Colombia, Israel, Jordan, Korea, Morocco, Oman, Panama, Peru, and Singapore, which typically grant duty-free access for goods originating from these partners. Similarly, the European Union has a vast network of FTAs (e.g., with Canada, Japan, South Korea, Mercosur) that can provide preferential duty rates, often 'Free,' for qualifying goods. The UK also maintains its own independent trade agreements post-Brexit. To claim these preferential rates, importers must ensure the goods meet the specific rules of origin outlined in the respective agreement and possess the necessary proof of origin, such as a Certificate of Origin (e.g., EUR.1, GSP Form A, or a self-certification by the exporter). Additionally, certain developing countries may benefit from Generalized System of Preferences (GSP) programs offered by developed nations, potentially allowing for duty-free entry, though the product's eligibility and country's GSP status must be verified.