PFOS Potassium Salt Technical Grade 98%
Technical grade potassium perfluorooctane sulfonate with 98% purity, used in manufacturing fire-fighting foams and coatings. Falls under HTS 2904.34.00.00 due to its specific chemical identity as a perfluorooctane sulfonate salt. Exclusively covers chemically defined sulfonated/halogenated hydrocarbons per Chapter 29 notes.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If put up specifically for fire-fighting foam production
Chemical preparations for specific uses like firefighting may shift to Chapter 38.
If for other perfluorosulfonates not explicitly named
Perfluorooctane sulfonates have dedicated subheading; others fall under 2904.90.
If misinterpreted as inorganic salt
Organic fluorochemical salts remain in Chapter 29, not inorganic compounds of Chapter 28.
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Import Tips & Compliance
• Obtain EPA TSCA certification for US imports; declare exact purity and impurities
• Common pitfall: mislabeling as 'fluorosurfactant' instead of chemical name triggers scrutiny
Related Products under HTS 2904.34.00.00
Potassium Perfluorooctane Sulfonate Powder
Pure potassium perfluorooctane sulfonate (PFOS-K) in powdered form, a fluorinated surfactant used in industrial applications. Classified under HTS 2904.34.00.00 as a sulfonated, halogenated derivative of hydrocarbons, specifically the potassium salt of perfluorooctane sulfonic acid. Meets chapter 29 requirements for chemically defined organic compounds with sulfonated and halogenated functions.
Perfluorooctane Sulfonate Potassium Flake Form
Flake-form potassium perfluorooctane sulfonate for easy handling in chemical synthesis. Precisely matches HTS 2904.34.00.00 as the potassium salt of PFOS, a halogenated sulfonated hydrocarbon derivative. Chapter notes confirm classification for pure compounds regardless of physical form.
High Purity PFOS-K for Research Use
Ultra-high purity (>99.5%) potassium perfluorooctane sulfonate for laboratory and research applications. Classified under HTS 2904.34.00.00 as it is a separate chemically defined compound per Chapter 29 note (a). Physical form (powder, crystal) does not affect heading.
Industrial Potassium Perfluorooctanesulfonate Crystals
Crystalline potassium PFOS for industrial wetting agent production, meeting purity specs for surfactants. HTS 2904.34.00.00 specifically covers this potassium salt as a perfluoroalkyl sulfonated derivative. Remains in Chapter 29 as chemically defined, not a preparation.
PFOS Potassium Salt with Stabilizer Additive
Potassium perfluorooctane sulfonate with added stabilizer for transport stability, per Chapter 29 note (f). Still classified under HTS 2904.34.00.00 as the primary compound remains chemically defined. Stabilizer does not change essential character or create specific use formulation.