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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If pre-mixed into fire-extinguishing preparations
Finished fire-fighting charges containing APFOS classify in 3813 per Chapter 29 exclusion note (k).
If when formulated as foam concentrate surfactant
APFOS in surface-active preparations shifts to Chapter 34 classification.
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Import Tips & Compliance
• Obtain waivers for legacy AFFF use if importing for military/fire service; provide NFPA 11 compliance documentation; track PFOA/PFOS phase-out deadlines
Related Products under HTS 2904.32.00.00
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).
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.
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.