Research Grade Lithium PFOS (>99%)
Research-grade lithium perfluorooctane sulfonate (Li-PFOS) with a purity exceeding 99%, intended for laboratory research on fluorosurfactants. As a separate chemically defined organic compound, it meets the criteria of Chapter 29 Note 1(a) and is classifiable under tariff item 2904.33.00 as the lithium salt of perfluorooctane sulfonic acid.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the product is the acid form of perfluorooctane sulphonic acid rather than the lithium salt
The acid is classified separately from its salts.
If the product is a mixture with other research chemicals or impurities that prevent it from being a separate chemically defined compound
Mixtures of chemicals may fall under prepared chemical products.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Provide a certificate of analysis showing purity above 99% to support classification as a separate chemically defined compound
• If the product is for research use only, consider whether it qualifies for any duty relief programs, such as the Customs Duties Reduction or Removal Program for scientific equipment
• Ensure proper labeling and documentation for controlled substances, as PFOS may be subject to export and import controls
Related Products under Tariff item 2904.33.00
High-Purity Li-PFOS for Electroplating Baths
High-purity lithium perfluorooctane sulfonate (Li-PFOS) in a form designed for use as a surfactant in electroplating baths. It is the lithium salt of perfluorooctane sulfonic acid, a halogenated, sulphonated derivative of a hydrocarbon, and is therefore classifiable under tariff item 2904.33.00.
Lithium Perfluorooctane Sulfonate Powder
Pure lithium perfluorooctane sulfonate (Li-PFOS) in powdered form, used as a fluorinated surfactant in various industrial applications. As the lithium salt of perfluorooctane sulfonic acid, it is a sulphonated, halogenated derivative of a hydrocarbon, falling squarely under tariff item 2904.33.00.
Lithium Perfluorooctane Sulfonate Stabilized Flake
Stabilized flake form of lithium perfluorooctane sulfonate (Li-PFOS) containing a minimal anti-caking agent added solely for safe transport and preservation. Under Chapter 29 Note 1(f), such additions are permitted without changing the classification, so the product remains classifiable under tariff item 2904.33.00 as the lithium salt of perfluorooctane sulfonic acid.
PFOS Lithium Salt Aqueous Solution 70%
A 70% aqueous solution of lithium perfluorooctane sulfonate (Li-PFOS) intended for use in firefighting foam production. Under Chapter 29 Note 1(d), products of heading 29.04 dissolved in water remain classifiable in the chapter, and thus this solution falls under tariff item 2904.33.00 as the lithium salt of perfluorooctane sulfonic acid.
Technical Grade Lithium PFOS Crystals
Technical-grade lithium perfluorooctane sulfonate (Li-PFOS) in crystalline form, used as a raw material in surfactant manufacturing. It is the lithium salt of perfluorooctane sulfonic acid, a halogenated, sulphonated derivative of a hydrocarbon, and is classifiable under tariff item 2904.33.00.