HS 293399 Other
Quick Answer: HS code 293399, "Other," encompasses a diverse range of heterocyclic compounds with nitrogen hetero-atom(s) only, not elsewhere specified in Chapter 29. This includes various complex organic chemicals crucial for pharmaceuticals, agrochemicals, and specialized industrial applications. Duty rates vary significantly: the UK Trade Tariff generally applies 0.00% ad valorem for most subheadings. The EU TARIC typically levies a 6.50% ad valorem duty. In the US, rates range from 6.5% ad valorem to specific duties like 15.4¢/kg + 64.5%, with many subheadings eligible for "Free" duty under various preferential trade agreements (e.g., A, AU, CL, KR). Importers and customs brokers must verify the specific 10-digit subheading and applicable trade agreements to determine the precise duty liability and ensure compliance.
What Are the Import Duty Rates?
🇬🇧 United Kingdom
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2933998013 | 0.00 % | — | — |
| 2933992000 | 0.00 % | — | — |
| 2933998000 | — | — | — |
| 2933998002 | 0.00 % | — | — |
| 2933998004 | 0.00 % | — | — |
🇪🇺 European Union (TARIC)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2933998001 | 6.50 % | — | — |
| 2933998002 | 6.50 % | — | — |
| 2933998003 | 6.50 % | — | — |
| 2933998007 | 6.50 % | — | — |
| 2933990000 | — | — | — |
🇺🇸 United States (HTSUS)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2933991701 | 6.5% | Free (17 programs) | ["kg"] |
| 2933995510 | — | — | ["kg"] |
| 2933999701 | 6.5% | Free (19 programs) | ["kg"] |
| 2933990100 | Free | — | ["kg"] |
| 2933990200 | Free | — | ["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 2933.99?
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 293399 cover?
This subheading covers heterocyclic compounds with nitrogen hetero-atom(s) only, specifically those not elsewhere specified or included in subheadings 2933.11 through 2933.91, or in other headings of Chapter 29. It acts as a residual category for nitrogen-heterocyclic compounds that do not possess the specific structural features or functional groups defined by more specific subheadings within Heading 2933. Examples include various complex organic chemicals used in pharmaceuticals, agrochemicals, and specialty chemical synthesis, provided they meet the general definition of nitrogen-heterocyclic compounds and are not explicitly classified elsewhere in the Harmonized System, as per the WCO Explanatory Notes and the USITC Harmonized Tariff Schedule (HTSUS) and EU TARIC definitions.
What falls outside HS 293399?
The following products are excluded from HS 293399: compounds with an un-fused pyrazole ring (e.g., antipyrine, classified in 2933.11), hydantoin and its derivatives (e.g., phenytoin, classified in 2933.21), pyridine and its salts (classified in 2933.31), quinoline and its derivatives (classified in 2933.41), malonylonitrile (classified in 2926.90), and nucleic acids and their salts (classified in 2934.99). Furthermore, heterocyclic compounds containing both nitrogen and other hetero-atoms (e.g., oxygen or sulfur) are excluded and fall under Heading 2934. Polymers of these compounds are also excluded and are typically classified in Chapter 39, while medicaments containing these compounds as active ingredients are classified in Chapter 30.
What are common classification mistakes for HS 293399?
A common error is misclassifying nitrogen-heterocyclic compounds that contain additional hetero-atoms (like oxygen or sulfur) within HS 293399. These compounds correctly belong in Heading 2934, which covers "Nucleic acids and their salts; other heterocyclic compounds with oxygen or sulfur hetero-atom(s) only; other heterocyclic compounds with nitrogen and oxygen or sulfur hetero-atom(s)." Another frequent mistake involves overlooking specific structural features that would place a compound in a more specific subheading within 2933, such as a pyrimidine ring or a piperazine ring, rather than defaulting to the residual "Other" category. Applying General Interpretative Rule (GRI) 1 and 6 is crucial to ensure the most specific subheading is chosen, avoiding the broad residual category unless absolutely necessary.
How should importers classify products under HS 293399?
The correct procedure for classifying products under HS 293399 involves a systematic review of the chemical structure and functional groups of the compound. Importers and customs brokers must first confirm that the compound is indeed a heterocyclic compound with nitrogen as the sole hetero-atom. Next, they must meticulously compare the compound's structure against all other specific subheadings within Heading 2933 (e.g., 2933.11 for pyrazole compounds, 2933.31 for pyridine compounds) to ensure it does not fit a more precise description. Only after confirming that the compound does not meet the criteria for any other specific subheading within 2933, and does not contain other hetero-atoms (which would place it in 2934), should it be classified under the residual subheading 293399. Consulting chemical experts and official WCO Explanatory Notes is highly recommended for complex structures.
Which HS Codes Are Related?
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FAQ
What are the typical import duty rates for products classified under HS 2933.99 in major markets?
For HS 2933.99 ('Other' heterocyclic compounds with nitrogen hetero-atom(s) only), the Most Favored Nation (MFN) duty rates can vary significantly by importing country. For instance, the United States generally applies an MFN duty rate of 6.5% ad valorem. The European Union's TARIC database often shows a duty rate of 6.5% ad valorem for this subheading. The UK Global Tariff also lists a 6.5% ad valorem rate. However, some countries may apply a 0.00% MFN rate or a compound rate, such as the 15.4¢/kg + 64.5% noted in some tariff schedules, which is less common for this specific 'Other' category but can appear for certain sub-classifications. Importers should always consult the specific tariff schedule of the country of importation for the most accurate and current MFN duty rate.
Which preferential trade agreements offer duty-free access for goods under HS 2933.99?
Many preferential trade agreements provide duty-free access for products classified under HS 2933.99. For imports into the United States, goods originating from countries with which the U.S. has a Free Trade Agreement (FTA) often qualify for 'Free' duty rates. This includes 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). Similarly, the EU and UK also have various agreements that grant preferential treatment. Importers should verify the specific rules of origin for their product under the relevant FTA to ensure eligibility for preferential duty rates and ensure proper documentation, such as a certificate of origin, is available.
What are the key classification criteria for determining if a product falls under HS 2933.99?
HS 2933.99 is the 'Other' residual subheading for heterocyclic compounds with nitrogen hetero-atom(s) only, not elsewhere specified or included in subheadings 2933.11 through 2933.90. The primary classification criteria involve confirming that the compound is indeed a heterocyclic compound, that it contains only nitrogen as the hetero-atom(s) in the ring structure, and that it is not specifically provided for in any preceding subheading of Chapter 29 or heading 2933. This requires a detailed chemical analysis of the molecular structure. WCO Explanatory Notes for Chapter 29 provide guidance on the scope of heterocyclic compounds and the specific exclusions that would direct a product to a more specific subheading.
Are there any specific documentation requirements or regulatory considerations for importing chemicals under HS 2933.99?
Beyond standard customs documentation (commercial invoice, packing list, bill of lading/airway bill), importing chemicals under HS 2933.99 may require additional documentation and compliance with specific regulatory bodies, depending on the country of import and the chemical's end-use. For instance, in the U.S., the Toxic Substances Control Act (TSCA) administered by the EPA may require specific certifications or notifications for new or existing chemical substances. In the EU, REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) regulations may necessitate pre-registration or registration. Importers should also be prepared to provide a Safety Data Sheet (SDS) for hazardous chemicals. It is crucial to check national chemical control laws and regulations in the importing country to ensure full compliance.