Bearing both an ethyl and a 2-hydroxyethyl group on the sulfonamide nitrogen, this PFAS compound occupies its own enumerated HS6 position (293530) within the perfluorooctane sulfonamide series, classified under tariff line 2935300000. The hydroxyethyl functionality distinguishes it from the simpler N-ethyl variant and is relevant to its historical use as a fluorosurfactant intermediate. Switzerland is the leading documented US supplier, reflecting the country's established specialty fluorochemical manufacturing base.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The HS separately enumerates each perfluorooctane sulfonamide variant because their distinct substituent groups give them different chemical properties, end uses, and regulatory profiles. The hydroxyethyl group in this compound made it a key intermediate in fluoropolymer and fluorosurfactant production, justifying its own statistical tracking line.
Mixtures are generally classified by the component that imparts the mixture's essential character, or under the heading applicable to the constituent present in the greatest proportion. If the mixture is a formulated product rather than a pure chemical, it may fall outside Chapter 29 entirely. Consult a licensed customs broker to determine the correct heading for mixed PFAS formulations.
Imports
Imports
—YoY · free account
Low of 1 reported month · imports
Low · free accountFewer than 6 of the last 12 months reported trade, or the latest month was under $500K; the trend chart is not shown for thin series.
Through August 2026 · imports 1 of 12 months reported. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share |
|---|---|---|---|---|
| 2935300000 | N-Ethyl-N-(2-Hydroxyethyl) Perfluorooctane Sulfona | — | -- | -- |
Imports · August 2026
origin
customs district
destination
entry
rate provision · imports
None recorded for this period.
Trade Directory
List your company under HS 293530 — N-Ethyl-N-(2-Hydroxyethyl) Perfluorooctane Sulfonamide, so the companies trading it can find you. Be the first supplier listed.
Subheading 5 of 6 in heading 2935