HS 293510 N-Methylperfluorooctane sulphonamide
Quick Answer: HS code 293510 specifically covers N-Methylperfluorooctane sulphonamide, a synthetic organic chemical compound. This substance is primarily used as an intermediate in the production of various fluorochemicals, including surfactants and polymers, which find applications in textiles, paper, and fire-fighting foams. Importers and customs brokers should note the varying duty rates: the UK applies a 6.00% ad valorem duty, while the EU's TARIC system lists 6.50%. For the US, the general Most Favored Nation (MFN) rate is 6.5% ad valorem, with significant preferential duty-free access available under various Free Trade Agreements (e.g., A+, AU, BH, CL, KR). However, a higher Column 2 rate of 15.4¢/kg + 57.5% applies to goods from non-MFN countries. Due to its perfluorooctane (PFOA) related structure, trade in this chemical may be subject to specific environmental regulations or restrictions in certain jurisdictions, requiring careful compliance checks.
What Are the Import Duty Rates?
🇬🇧 United Kingdom
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2935100000 | 6.00 % | — | — |
🇪🇺 European Union (TARIC)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2935100000 | 6.50 % | — | — |
🇺🇸 United States (HTSUS)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2935100000 | 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 2935.10?
Imports of N-Methylperfluorooctane sulphonamide 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, 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?
Trade Volume 2023
How to Classify This HS Code?
What products does HS 293510 cover?
This subheading covers N-Methylperfluorooctane sulphonamide, a specific chemical compound falling under Heading 2935 of the Harmonized System. Heading 2935 encompasses sulphonamides, which are organic compounds containing the sulphonamide functional group (-SO2NH2). N-Methylperfluorooctane sulphonamide is precisely defined by its chemical structure, featuring a perfluorooctane chain, a sulphonamide group, and an N-methyl substitution. This classification is consistent with the World Customs Organization (WCO) Harmonized System Nomenclature and is reflected in national tariffs such as the USITC Harmonized Tariff Schedule (HTSUS) and the EU TARIC system, ensuring global uniformity for this distinct chemical. It is a key intermediate in the production of various fluorochemicals.
What falls outside HS 293510?
The following products are excluded from HS 293510: other sulphonamides that do not possess the precise N-Methylperfluorooctane structure, even if they are closely related. For instance, perfluorooctane sulphonic acid (PFOS) and its salts, while chemically related, are classified under different subheadings, typically within Heading 2904 or 2930, depending on their specific chemical form and functional groups. Similarly, polymers or articles containing N-Methylperfluorooctane sulphonamide as a component are generally classified under their respective headings for plastics, articles of plastic, or other manufactured goods, rather than as the pure chemical compound itself. The scope is strictly limited to the isolated, defined chemical substance.
What are common classification mistakes for HS 293510?
A common error is misclassifying derivatives or mixtures containing N-Methylperfluorooctane sulphonamide under HS 293510. Importers sometimes incorrectly apply this subheading to formulations or preparations where N-Methylperfluorooctane sulphonamide is merely an ingredient, rather than the primary substance. According to General Interpretative Rule (GRI) 1, classification is determined by the terms of the headings and any relative section or chapter notes. GRI 3(b) would apply if it were a mixture, requiring classification by the material or component that gives the goods their essential character. Pure N-Methylperfluorooctane sulphonamide must be distinguished from its downstream products or blends, which often fall into other chapters based on their composition and intended use.
How should importers classify products under HS 293510?
The correct procedure for classifying products under HS 293510 involves a meticulous review of the chemical's Certificate of Analysis (CoA) or Safety Data Sheet (SDS) to confirm its precise chemical name and structure. Importers and customs brokers must verify that the product is indeed N-Methylperfluorooctane sulphonamide and not a salt, ester, derivative, or mixture. Reference should be made to the WCO Explanatory Notes for Heading 2935, which provide detailed guidance on the scope of sulphonamides. For US imports, consult the HTSUS, noting the current duty rate of 3.5% ad valorem for products from most favored nation (MFN) countries. For EU imports, check the TARIC database for the applicable duty rate and any specific import measures. Always retain comprehensive documentation to support the classification decision during customs audits.
Which HS Codes Are Related?
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FAQ
What are the standard Most Favored Nation (MFN) import duty rates for HS code 2935.10 ('N-Methylperfluorooctane sulphonamide') in major markets?
The MFN duty rates for HS 2935.10 vary significantly by importing country. For instance, the United States applies a duty rate of 6.5% ad valorem under the Harmonized Tariff Schedule of the United States (HTSUS) General column 1. The European Union's TARIC database indicates a conventional duty rate of 6.5% ad valorem. The United Kingdom Global Tariff (UKGT) also lists a 6.5% ad valorem duty. Importers should always verify the current MFN rate with the specific customs authority of the importing country, as rates are subject to change based on national legislation and international agreements.
Are there any preferential duty rates available for 'N-Methylperfluorooctane sulphonamide' (HS 2935.10) under common Free Trade Agreements (FTAs) or special programs?
Yes, preferential duty treatment is available for HS 2935.10 under various trade agreements, potentially allowing for duty-free entry or reduced rates, provided the goods meet the respective Rules of Origin. For example, the United States grants duty-free entry (0% ad valorem) for imports from countries with which it has FTAs, 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), among others. Similar preferential rates exist under EU and UK trade agreements. Importers must ensure they have the correct documentation, such as a Certificate of Origin, to claim these preferential rates.
What are the key classification criteria for 'N-Methylperfluorooctane sulphonamide' under HS 2935.10, and what are common classification pitfalls?
HS 2935.10 specifically covers 'N-Methylperfluorooctane sulphonamide,' which falls under Chapter 29 for 'Organic chemicals,' and specifically subheading 2935 for 'Sulphonamides.' The key classification criterion is the precise chemical structure of the compound, confirming it is indeed N-Methylperfluorooctane sulphonamide. Common classification pitfalls include misidentifying isomers or closely related per- and polyfluoroalkyl substances (PFAS) that might have similar names but different chemical structures, leading to classification under other subheadings within Chapter 29 or even Chapter 38 if they are mixtures or preparations. Accurate chemical identification, often supported by a Certificate of Analysis, is crucial for correct classification.
What specific documentation is typically required by customs authorities for the import of HS 2935.10, 'N-Methylperfluorooctane sulphonamide'?
Standard import documentation for HS 2935.10 includes a commercial invoice, packing list, bill of lading or air waybill, and a Certificate of Origin if preferential duty rates are claimed. Due to the nature of this chemical, additional documentation may be required. This could include a Safety Data Sheet (SDS) to comply with chemical safety regulations, a Certificate of Analysis (CoA) to confirm the chemical composition and purity, and potentially permits or licenses from environmental or health authorities (e.g., EPA in the US, ECHA in the EU) if the substance is subject to specific chemical control regimes (e.g., REACH, TSCA, or regulations concerning PFAS). Importers should consult the specific requirements of the destination country's customs and regulatory agencies.