What is HS code 2935 used for?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
HS-4 · Heading
2935 — Sulphonamides
Chapter 29: Organic chemicals
Plain-language overview
Use HS-4 2935 when importing or exporting sulphonamides, such as N-methylperfluorooctane sulphonamide, which is commonly used in various chemical applications. Understanding the specific subheadings will help you classify your products accurately.
When choosing between subheadings like 293510 and 293520, note that the former is for N-methylperfluorooctane sulphonamide, while the latter covers N-ethylperfluorooctane sulphonamide. The key difference lies in the methyl versus ethyl substitution on the nitrogen atom.
If your product is a sulphonamide but doesn’t fit neatly into the specific categories, consider HS-6 293590, which covers other sulphonamides not elsewhere classified. This is useful for unique formulations or compounds that don’t match the listed subheadings.
Keywords & topics
Useful terms traders and brokers use for this HS-4 heading.
sulphonamides import · N-methylperfluorooctane sulphonamide · N-ethylperfluorooctane sulphonamide · chemical classification · perfluorooctane sulphonamide · HS code 2935 · organic chemicals · chemical exports · sulphonamide applications · customs classification
Examples
Drawn from the official tariff wording for this HS-4 heading. Always confirm against your published schedule and legal notes.
- N-methylperfluorooctane sulphonamide (HS-6 293510)
- N-ethylperfluorooctane sulphonamide (HS-6 293520)
- N-ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide (HS-6 293530)
- N-(2-hydroxyethyl)-N-methylperfluorooctane sulphonamide (HS-6 293540)
- Other perfluorooctane sulphonamides (HS-6 293550)
- Other sulphonamides not elsewhere classified (HS-6 293590)
Common questions
Frequent classification questions with short practical guidance.
How to classify sulphonamides for import?
Write down material, use, and product form first, then compare nearby lines before you lock the code.
Difference between N-methyl and N-ethyl sulphonamides?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
What are perfluorooctane sulphonamides?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
How to find the right HS code for chemicals?
Match the product to the legal wording, then verify the final pick in your country tariff schedule before filing.
What does n.e.c. mean in HS codes?
Use n.e.c. only when you have ruled out every more specific line in the same section.
Related topics
Common real-world topics that come up during code comparison.
how to classify sulphonamides for customs
Check the exact product specs and destination-country tariff notes before finalizing the code.
importing N-methylperfluorooctane sulphonamide
Check the exact product specs and destination-country tariff notes before finalizing the code.
understanding HS code 2935 for sulphonamides
Use this topic to narrow your shortlist, then validate the final code against legal wording.
difference between sulphonamide subheadings
Compare adjacent HS lines and pick the one that matches material, function, and product form most closely.
specific applications of sulphonamides in industry
Use this topic to narrow your shortlist, then validate the final code against legal wording.
what are the uses of N-ethylperfluorooctane sulphonamide
Use this topic to narrow your shortlist, then validate the final code against legal wording.
guidelines for exporting organic chemicals
Check the exact product specs and destination-country tariff notes before finalizing the code.
how to determine the correct HS code for chemicals
Use this topic to narrow your shortlist, then validate the final code against legal wording.
Questions & answers
For orientation only—the binding text is your national tariff and the WCO nomenclature your country uses.
- What types of products fall under HS-4 2935?
- HS-4 2935 includes various sulphonamides, specifically perfluorooctane sulphonamides, with distinct classifications based on their chemical structure.
- How do I know which HS-6 line to use?
- Select the HS-6 line that matches your product's specific chemical structure, such as methyl or ethyl substitutions on the nitrogen atom.
- What does n.e.c. mean in HS-6 293590?
- n.e.c. stands for 'not elsewhere classified', which is used for sulphonamides that do not fit into the defined subheadings.
- Can I use HS-6 293590 for unique formulations?
- Yes, if your sulphonamide does not match the other specific subheadings, you can classify it under HS-6 293590.
- Are there any special regulations for importing sulphonamides?
- Yes, check with your local customs authority for any specific regulations or restrictions on importing sulphonamides.
Continue classification
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Browse this heading in the lookup
Heading-browse mode uses HS-6 293500 (first line of this block).
HS-6 subheadings (6)
- 293510Sulphonamides; N-methylperfluorooctane sulphonamide
- 293520Sulphonamides; N-ethylperfluorooctane sulphonamide
- 293530Sulphonamides; N-ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide
- 293540Sulphonamides; N-(2-hydroxyethyl)-N-methylperfluorooctane sulphonamide
- 293550Sulphonamides; other perfluorooctane sulphonamides
- 293590Sulphonamides; n.e.c. in heading no. 2935