Ammonium Perfluorooctane Sulfonate (APFOS) Powder
Pure ammonium perfluorooctane sulfonate (APFOS) in powdered form, a fluorinated surfactant classified under HTS 2904.32.00.00 as a sulfonated, halogenated derivative of hydrocarbons. It is chemically defined as the ammonium salt of perfluorooctane sulfonic acid, meeting Chapter 29 note (a).
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If formulated into a commercial cleaning solution
Mixtures containing APFOS as a minor component for retail or industrial cleaning classify as chemical preparations in Chapter 38, not pure compounds.
If imported as a derivative of a different hydrocarbon chain
Sulfonated derivatives of shorter-chain perfluoroalkanes fall under other subheadings within 2904 based on specific carbon structure.
If containing additional organo-sulfur linkages beyond simple sulfonate
More complex organo-sulfur compounds with metals or other nonmetals linked to carbon classify in heading 2930 per chapter notes.
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Import Tips & Compliance
• Verify TSCA compliance and obtain EPA approvals prior to import due to PFAS restrictions; provide detailed chemical purity certificates; ensure proper hazardous material labeling for transport
Related Products under HTS 2904.32.00.00
Technical Grade Ammonium Perfluorooctane Sulfonate 98%
Technical grade APFOS at 98% purity with minor impurities, still classified as a separate chemically defined organic compound under HTS 2904.32.00.00 per Chapter 29 note (a). Used in industrial wetting agent formulations as a perfluorosulfonate salt.
APFOS Stabilized Flake Form
Ammonium perfluorooctane sulfonate flakes with added stabilizer for safe transport, classified under HTS 2904.32.00.00 per Chapter 29 note (f). The stabilizer preserves the pure compound without altering its primary chemical identity as a perfluorosulfonate salt.
High Purity APFOS for Firefighting Foam Production
Ultra-high purity ammonium perfluorooctane sulfonate specifically for AFFF concentrate production, under HTS 2904.32.00.00 as a chemically defined fluorosulfonate. End-use as firefighting surfactant does not affect pure compound classification.
Ammonium Perfluorooctane Sulfonate Aqueous Solution 50%
50% APFOS dissolved in water, classified under HTS 2904.32.00.00 per Chapter 29 note (d) for chemically defined organic compounds in aqueous solution. The water serves as solvent without specific use adaptation.
APFOS Anti-Dusting Granules
Granular ammonium perfluorooctane sulfonate with anti-dusting agent for handling safety, under HTS 2904.32.00.00 per Chapter 29 note (g). Addition facilitates identification without specific use suitability.