Perfluoroalkyl Sulfonamide PFAS Intermediate (EtFOSE)
EtFOSE, or N-Ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide, serves as a key building block for synthesizing fluorosurfactants and PFAS polymers. It is classified under tariff item 2935.30.00 as it matches the exact named sulphonamide in the tariff description.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the product is a mixture of sulphonamide intermediates
The specific tariff item covers only the single named compound.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Classify the product under 2935.30.00 only if it is the pure compound; mixtures with other intermediates fall under 2935.90.00
• Document the end-use to confirm it is not put up for retail sale as a consumer product
• Consult the CBSA's Advance Rulings service for binding classification decisions
Related Products under Tariff item 2935.30.00
Fluorochemical Surfactant Building Block N-EtFOSE
N-EtFOSE is a fluorinated sulfonamide used as an intermediate in producing water- and oil-repellent coatings. It precisely matches the chemical description of N-Ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide, which is the named compound under tariff item 2935.30.00.
High-Purity EtFOSE for Polymer Synthesis
This high-purity grade of N-Ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide is optimized for polymerization into fluoropolymers. It is the exact named compound under tariff item 2935.30.00, and its purity does not affect classification as long as it meets the definition of a separate chemically defined compound.
N-Ethyl-N-(2-Hydroxyethyl)perfluorooctane Sulfonamide
This is a specific perfluorinated sulphonamide compound with a perfluorooctane chain attached to the sulphonamide group, along with N-ethyl and N-(2-hydroxyethyl) substituents. It falls directly under tariff item 2935.30.00 as the named compound N-Ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide.
PFOS-Derivative Sulfonamide for Textile Finishing
A PFOS-related sulphonamide, N-Ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide, used in textile repellency treatments. It is directly under tariff item 2935.30.00 as a sulphonamide matching the subheading description and Chapter 29 notes.
Technical Grade Perfluorooctane Sulfonamide (N-Ethyl Hydroxyethyl)
Technical grade version contains minor impurities but remains the named N-Ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide per Chapter 29 Note 1(a). It is classified under tariff item 2935.30.00 for use in industrial wetting agents.