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2904.34.00.00/High Purity PFOS-K for Research Use/Japan

High Purity PFOS-K for Research Use from Japan

Ultra-high purity (>99.5%) potassium perfluorooctane sulfonate for laboratory and research applications. Classified under HTS 2904.34.00.00 as it is a separate chemically defined compound per Chapter 29 note (a). Physical form (powder, crystal) does not affect heading.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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Import Tips

• Include end-use statement for research exemption from some PFAS bans; provide analytical certificates (HPLC, NMR)

• Small quantities still require full chemical declaration