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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If aqueous solution >50% with co-solvents or additives
Complex mixtures exceed pure compound solutions, moving to preparations in Chapter 38.
If concentration renders it inorganic-like
High dilution may trigger reclassification if not meeting organic compound criteria.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Confirm solution concentration via HPLC analysis; use DOT-approved containers for aqueous fluorochemicals; monitor for precipitation during storage/transport
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.
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.
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.