About HS Code 293520
N-ethylperfluorooctane sulphonamide (N-EtFOS) is another specific per- and polyfluoroalkyl substance (PFAS) derivative, similar to N-MeFOS, that was historically used for its surfactant properties and ability to repel water and oil. Its applications spanned textiles, paper coatings, and fire-fighting foams. However, due to growing environmental and health concerns regarding PFAS compounds, its production and use have been severely restricted or banned in many countries. Current trade is highly limited, primarily for research, analytical standards, or very specific, controlled industrial applications under strict regulatory oversight. Importers and exporters were historically chemical companies and industries utilizing surface treatment agents. Key considerations include the global regulatory efforts to phase out PFAS, the environmental persistence of N-EtFOS, and the ongoing search for non-fluorinated alternatives. Trade is now largely driven by environmental monitoring and compliance.
Products Under This Code
N-ethylperfluorooctane sulphonamide (N-EtFOS), Perfluorooctane sulfonamide (PFOSA)
Real World Examples
Historical Stainmaster carpet treatments, Fire-fighting foams (AFFF components), Water-resistant paper coatings
Common Misclassification
This code is highly specific. It might be confused with other sulfonamides under 2935.90 if the specific N-ethylperfluorooctane structure is not precisely identified, or with other PFAS chemicals if the sulphonamide group is not recognized.
Industry
This code belongs to the Chemicals industry.
Trade Overview
Historically, the United States, European countries, and China were key players, but current trade is minimal and heavily regulated worldwide.
Frequently Asked Questions
What is HS code 293520?
HS code 293520 covers: Sulphonamides; N-ethylperfluorooctane sulphonamide. N-ethylperfluorooctane sulphonamide (N-EtFOS) is another specific per- and polyfluoroalkyl substance (PFAS) derivative, similar to N-MeFOS, that was historically used for its surfactant properties and ability to repel water and oil. Its applications spanned textiles, paper coatings, and fire-fighting foams. However, due to growing environmental and health concerns regarding PFAS compounds, its production and use have been severely restricted or banned in many countries. Current trade is highly limited, primarily for research, analytical standards, or very specific, controlled industrial applications under strict regulatory oversight. Importers and exporters were historically chemical companies and industries utilizing surface treatment agents. Key considerations include the global regulatory efforts to phase out PFAS, the environmental persistence of N-EtFOS, and the ongoing search for non-fluorinated alternatives. Trade is now largely driven by environmental monitoring and compliance.
What products fall under HS code 293520?
N-ethylperfluorooctane sulphonamide (N-EtFOS), Perfluorooctane sulfonamide (PFOSA)
What are common misclassifications for HS code 293520?
This code is highly specific. It might be confused with other sulfonamides under 2935.90 if the specific N-ethylperfluorooctane structure is not precisely identified, or with other PFAS chemicals if the sulphonamide group is not recognized.
How is HS code 293520 structured?
HS code 293520 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 (20) specify the subheading. This code is standardized globally by the World Customs Organization.