HS code · 6-digit subheading
HS Code 2935.30 – Sulphonamides; N-ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide
HS code 2935.30 is the 6-digit subheading for sulphonamides, N-ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide. It is used for N-ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide (technical grade), related PFAS intermediates and analytical standards of N-EtFOSE.
What HS 2935.30 covers
This HS code is highly specific, designating N-ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide. This compound belongs to the broader class of per- and polyfluoroalkyl substances (PFAS), which have historically been used in various industrial applications due to their unique surfactant properties, including in fire-fighting foams, textiles, and surface coatings. However, due to growing environmental and health concerns regarding PFAS persistence and toxicity, trade in this specific sulfonamide, like many other PFAS, is increasingly restricted and regulated globally. Importers and exporters are typically specialty chemical manufacturers, but the market is shrinking as industries transition to PFAS-free alternatives. Compliance with evolving environmental regulations is the primary challenge in its trade.
- Covers
- N-ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide (technical grade)
- Related PFAS intermediates
- Analytical standards of N-EtFOSE
- Examples
Historically used in some 3M products (e.g., Scotchgard, though formulations changed), specific research chemicals from specialized suppliers
Codes often confused with 2935.30
Common mistake. This compound can be confused with other sulfonamides in 2935.90 or other perfluorinated compounds in 2903, especially if the full chemical name is not precisely matched.
Top exporters and importers of HS code 293530, 2025
In 2025, the largest exporter of HS code 293530 in UN Comtrade data was Italy, with 60% of world exports; the largest importer in UN Comtrade data was Egypt, with 66% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Top exporters 2025 · share of world exports
- 1 Italy $5K 60% of world exports
- 2 Brazil $1K 14% of world exports
- 3 Slovakia $558 7.4% of world exports
World total: $8K Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Egypt $232K 66% of world imports
- 2 Morocco $70K 20% of world imports
- 3 Germany $15K 4.3% of world imports
World total: $351K Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for 2935.30
Brazil does not split HS 2935.30: its NCM code is 2935.30.00.
All Brazil NCM codes in heading 29.35 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 2935.30
What is HS code 293530?
HS code 293530 is a 6-digit subheading in the Harmonized System that covers: Sulphonamides; N-ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide. This HS code is highly specific, designating N-ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide. This compound belongs to the broader class of per- and polyfluoroalkyl substances (PFAS), which have historically been used in various industrial applications due to their unique surfactant properties, including in fire-fighting foams, textiles, and surface coatings. However, due to growing environmental and health concerns regarding PFAS persistence and toxicity, trade in this specific sulfonamide, like many other PFAS, is increasingly restricted and regulated globally. Importers and exporters are typically specialty chemical manufacturers, but the market is shrinking as industries transition to PFAS-free alternatives. Compliance with evolving environmental regulations is the primary challenge in its trade.
What products fall under HS code 293530?
N-ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide (technical grade), related PFAS intermediates, analytical standards of N-EtFOSE
What are common misclassifications for HS code 293530?
This compound can be confused with other sulfonamides in 2935.90 or other perfluorinated compounds in 2903, especially if the full chemical name is not precisely matched.
Which countries are the top exporters of goods under HS code 293530?
In 2025, the top exporters of HS code 293530 in UN Comtrade data were Italy ($5K, 60% of world exports), Brazil ($1K) and Slovakia ($558). World exports came to about $8K, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of goods under HS code 293530?
In 2025, the top importers of HS code 293530 in UN Comtrade data were Egypt ($232K, 66% of world imports), Morocco ($70K) and Germany ($15K). World imports came to about $351K, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
How is HS code 293530 structured?
HS code 293530 is a 6-digit subheading under the Harmonized System. The first 2 digits (29) identify the chapter, digits 3-4 (35) identify the heading, and digits 5-6 (30) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 293530?
In Brazil, HS code 293530 is NCM 2935.30.00. The last two digits are 00 because Brazil does not split this HS code further.