PFOS Lithium Salt Aqueous Solution 70% from China
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.
Duty Rate — China → Canada
Import Tips
• Confirm that the solution is solely a water dilution of the pure compound, with no other solvents or additives, to maintain classification under 2904.33.00
• Note that PFOS is a persistent organic pollutant under the Stockholm Convention; verify that the import is permitted under Canadian regulations and obtain any necessary permits
• Clearly state the concentration and chemical composition on the import documentation