Pyridinium Perfluorooctane Sulfonate
Pyridinium perfluorooctane sulfonate uses pyridine as cation with PFOS anion for catalytic uses. Under HTS 2904.35.00.00 as specified other salts of perfluorooctane sulfonic acid in heading 2904.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If as quaternary ammonium compound
Certain heterocyclic ammonium salts may classify under heading 2933 if not simple salts.
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Import Tips & Compliance
• Heterocyclic cation requires precise NMR confirmation of salt structure
• Check for dual-use export controls due to fluorochemical applications
• Ensure no color/odor additions render specific-use per exclusion note (g)
Related Products under HTS 2904.35.00.00
Lithium Perfluorooctane Sulfonate
Lithium perfluorooctane sulfonate is the lithium salt of perfluorooctane sulfonic acid (PFOS), a fully fluorinated organic compound with a sulfonate group. It falls under HTS 2904.35.00.00 as one of the 'other salts' of PFOS, distinct from the acid itself or its sulfonyl fluoride, per chapter 29 rules for sulfonated halogenated hydrocarbons.
Potassium Perfluorooctane Sulfonate
Potassium perfluorooctane sulfonate (potassium PFOS) is a perfluorinated sulfonate salt used in specialty chemical applications. Classified under HTS 2904.35.00.00 as an 'other salt' of perfluorooctane sulfonic acid, fitting chapter 29 for halogenated sulfonated hydrocarbon derivatives.
Ammonium Perfluorooctane Sulfonate
Ammonium perfluorooctane sulfonate is the ammonium salt form of PFOS, a fluorosurfactant precursor. It qualifies for HTS 2904.35.00.00 as an other salt of perfluorooctane sulfonic acid under the sulfonated, halogenated hydrocarbons of heading 2904.
Sodium Perfluorooctane Sulfonate
Sodium perfluorooctane sulfonate (Na-PFOS) serves as a surfactant intermediate with high surface activity due to its perfluoroalkyl chain. Under HTS 2904.35.00.00 as other PFOS salts, per chapter 29 for chemically defined sulfonated fluorohydrocarbons.
Diethanolamine Perfluorooctane Sulfonate
Diethanolamine perfluorooctane sulfonate pairs a organic base with PFOS for water-soluble applications. Classified in HTS 2904.35.00.00 as an other salt, following chapter rules for organic salts of sulfonated compounds.
Triethylammonium Perfluorooctane Sulfonate
Triethylammonium perfluorooctane sulfonate is an ionic liquid precursor from PFOS and triethylamine. It fits HTS 2904.35.00.00 for other PFOS salts as a chemically defined sulfonated perfluoro compound.