HS 293499 Other
Quick Answer: HS code 293499, titled "Other," is a residual classification within Chapter 29 for heterocyclic compounds with nucleic acid structure and other heterocyclic compounds. This broad category encompasses a diverse range of organic chemical compounds not specifically provided for in other subheadings of 2934. Due to its "other" nature, precise product identification requires careful analysis of chemical structure and intended use. Importers and customs brokers should note the varying duty rates: the UK generally applies a 6.00% ad valorem rate, the EU a 6.50% ad valorem rate, and the US a 6.5% ad valorem rate, though many US imports may qualify for "Free" duty under various preferential trade agreements (e.g., A, AU, BH, CL, KR). Some specific US sub-classifications can face rates as high as 30.5%. Due to the diverse nature of products under this "other" classification, meticulous product analysis and consultation with official tariff schedules (e.g., UK Trade Tariff, EU TARIC, USITC HTS) are crucial for accurate classification and duty assessment.
What Are the Import Duty Rates?
🇬🇧 United Kingdom
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2934990000 | — | — | — |
| 2934999000 | — | — | — |
| 2934999005 | 6.00 % | — | — |
| 2934999007 | 6.00 % | — | — |
| 2934999009 | 6.00 % | — | — |
🇪🇺 European Union (TARIC)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2934999027 | 6.50 % | — | — |
| 2934999004 | 6.50 % | — | — |
| 2934999005 | 6.50 % | — | — |
| 2934999006 | 6.50 % | — | — |
| 2934999007 | 6.50 % | — | — |
🇺🇸 United States (HTSUS)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2934999001 | 6.5% | Free (18 programs) | ["kg"] |
| 2934990100 | Free | — | ["kg"] |
| 2934990800 | 6.5% | Free (17 programs) | ["kg"] |
| 2934991500 | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) 3.25% (1 programs) | ["kg"] |
| 2934991800 | 6.5% | 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 2934.99?
Imports of Other 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 18 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?
Trade Volume 2023
How to Classify This HS Code?
What products does HS 293499 cover?
This subheading covers heterocyclic compounds, exclusively containing oxygen, nitrogen, or sulfur atoms (or any combination thereof) as the only hetero-atoms, which are not otherwise specified or included in other subheadings of Heading 2934. Specifically, it encompasses a broad range of organic chemicals that possess a heterocyclic ring system where the ring atoms include carbon and at least one oxygen, nitrogen, or sulfur atom, and are not derivatives of nucleic acids or other specific compounds enumerated in HS 2934.10 through 2934.91. This aligns with the WCO Harmonized System Explanatory Notes for Heading 2934, which broadly covers nucleic acids and their salts, whether or not chemically defined, and other heterocyclic compounds.
What falls outside HS 293499?
The following products are excluded from HS 293499: compounds that are specifically provided for in other subheadings of Heading 2934, such as nucleic acids and their salts (2934.10), compounds containing an unfused thiazole ring (whether or not hydrogenated) in the structure (2934.20), or compounds containing an unfused benzothiazole ring (whether or not hydrogenated) in the structure (2934.30). Additionally, compounds that are derivatives of nucleic acids or other specific heterocyclic compounds explicitly listed in other subheadings, like those containing a phenothiazine ring system (2934.91), would also be excluded. For example, certain antibiotics that are heterocyclic compounds might be classified under Chapter 30 if they are put up in measured doses or for retail sale as medicaments, rather than under Chapter 29.
What are common classification mistakes for HS 293499?
A common error is misclassifying heterocyclic compounds that have a more specific provision elsewhere within Heading 2934 or even in other chapters. Importers sometimes default to "Other" (293499) without thoroughly checking for more specific subheadings, such as those for compounds containing specific ring systems like thiazole or phenothiazine. Another frequent mistake involves overlooking the "exclusively containing oxygen, nitrogen, or sulfur atoms" criterion, leading to the incorrect classification of compounds that contain other hetero-atoms (e.g., phosphorus, selenium) within their heterocyclic ring structure. Proper application of General Interpretative Rule (GRI) 1, which states that classification shall be determined according to the terms of the headings and any relative section or chapter notes, is crucial to avoid these errors.
How should importers classify products under HS 293499?
The correct procedure for classifying products under HS 293499 involves a systematic review of the chemical structure and a careful comparison against the specific provisions of Heading 2934 and its subheadings. Importers and customs brokers should first ascertain if the compound is a heterocyclic compound and if its only hetero-atoms are oxygen, nitrogen, or sulfur. Next, they must meticulously check if the compound is explicitly mentioned or described in any other more specific subheading within 2934 (e.g., 2934.10, 2934.20, 2934.30, 2934.91). Only if no more specific subheading applies should 293499 be considered. Consulting the WCO Harmonized System Explanatory Notes and relevant national tariff interpretations (e.g., USITC HTSUS, EU TARIC) is essential for accurate determination.
Which HS Codes Are Related?
Not the right code? Search all HS codes to find the correct tariff classification.
FAQ
What is the general import duty rate for products classified under HS 2934.99 in major markets?
The Most Favored Nation (MFN) import duty rates for products classified under HS 2934.99 ('Other' heterocyclic compounds, nucleic acids and their salts, etc.) generally range from 6.0% to 6.5% ad valorem in many developed economies, such as the United States, European Union, and United Kingdom. For instance, the U.S. Harmonized Tariff Schedule (HTSUS) typically lists an MFN (General) rate of 6.5% ad valorem for 2934.99.00. The EU TARIC and UK Trade Tariff also show similar MFN rates for this subheading. It is crucial to verify the specific duty rate for the country of importation, as rates can vary. Some countries may also apply higher rates, such as the 30.5% mentioned, often due to specific trade policies or anti-dumping measures, though this is less common for MFN rates on this general 'Other' category.
Which trade agreements offer preferential duty rates for HS 2934.99, and how can importers claim them?
Many Free Trade Agreements (FTAs) provide preferential duty treatment, often resulting in a 'Free' (0%) duty rate for products under HS 2934.99, provided the goods meet the respective agreement's Rules of Origin. Examples of agreements where preferential rates (often 'Free') are available include: the United States-Mexico-Canada Agreement (USMCA), agreements with 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). To claim preferential rates, importers must ensure the goods originate in a qualifying country as defined by the FTA and possess valid proof of origin, such as a certificate of origin or an origin declaration, which must be presented to customs at the time of importation. Customs brokers can assist in verifying origin criteria and preparing the necessary documentation.
What are the key classification criteria for determining if a product falls under HS 2934.99 ('Other')?
HS 2934.99 is the residual 'Other' subheading within heading 2934, which covers 'Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds.' For a product to be classified under 2934.99, it must first be a heterocyclic compound (meaning it contains a ring structure with at least two different elements, one of which is carbon) or a nucleic acid/salt thereof. Secondly, it must not be more specifically provided for in any of the preceding subheadings of 2934 (e.g., 2934.10 for compounds containing an unfused thiazole ring, 2934.20 for compounds containing benzothiazole ring-system, etc.). Importers and customs brokers should consult the Explanatory Notes to the Harmonized System for Chapter 29 and heading 2934 for detailed guidance and examples to ensure accurate classification, applying General Interpretative Rules (GIRs) 1 and 6.
What specific documentation is typically required for importing goods classified under HS 2934.99?
Standard import documentation is required for goods under HS 2934.99, including a commercial invoice, packing list, and bill of lading or air waybill. For chemical products, additional documentation is often critical: a Safety Data Sheet (SDS) or Material Safety Data Sheet (MSDS) is frequently requested by customs or other regulatory agencies to assess potential hazards and ensure compliance with chemical control regulations. If claiming preferential duty rates under a Free Trade Agreement, a valid Certificate of Origin or origin declaration is mandatory. Depending on the specific chemical compound, permits or licenses from agencies such as the Environmental Protection Agency (EPA) or Food and Drug Administration (FDA) in the U.S., or equivalent bodies in other countries, may also be necessary, especially if the substance has specific controlled uses or environmental impacts. Importers should consult with their customs broker to confirm all specific documentation requirements prior to shipment.