2904.31.00.00/Perfluorooctane Sulfonyl Fluoride (POSF)/Canada

Perfluorooctane Sulfonyl Fluoride (POSF) from Canada

Perfluorooctane sulfonyl fluoride (POSF), the acid fluoride derivative of PFOS, explicitly covered under HTS 2904.31.00.00. This reactive fluorochemical intermediate fits Chapter 29 as a halogenated, sulfonated hydrocarbon derivative.

Duty Rate — Canada → United States

13.7%

Rate breakdown

9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada

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Import Tips

• Require DOT/ADR Class 8 corrosive labeling and UN 1779 shipping designation

• Submit TSCA pre-manufacture notice if first US import of this substance

• Confirm no anti-dusting agents added that trigger Chapter 29 note (g) reclassification