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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If diluted in solvents beyond transport safety limits
Solutions exceeding chapter note (e) criteria for safety/transport fall under mixtures of HTS chapter 38.
If classified as the parent perfluorooctane sulfonic acid
The free acid form is in a prior subheading; salts take the later numerical order per chapter note.
If containing additional sulfur directly linked to carbon beyond sulfonation
Organo-sulfur compounds with extra non-halogen heteroatoms shift to heading 2930 per chapter notes.
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Import Tips & Compliance
• Verify PFOS content and obtain EPA approvals due to restrictions under TSCA and Stockholm Convention on persistent organic pollutants
• Provide detailed chemical analysis certificates confirming it's a PFOS salt, not the acid or fluoride form
• Avoid misclassification as mixtures; ensure purity meets chapter note (a) for separate chemically defined compounds
Related Products under HTS 2904.35.00.00
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.
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.