Tariff reference › Chapter 29 › 2904.31.00.00
HTS 2904.31.00.00 — Perfluorooctane sulfonic acid
The current US import duty for Perfluorooctane sulfonic acid (HTS 2904.31.00.00) — the base rate, any Section 301/232/122 surcharge that applies, and what's changed recently.
Sulfonated, nitrated or nitrosated derivatives of hydrocarbons, whether or not halogenated: › Perfluorooctane sulfonic acid, its salts and perfluorooctane sulfonyl fluoride: › Perfluorooctane sulfonic acid
Current US duty rate
| Column 1 (General / MFN) | 3.7% |
|---|---|
| Special (FTA programs) | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) |
| Column 2 (other) | 25% |
No Chapter 99 (Section 301/232/122) cross-reference on this line; origin-specific surcharges may still apply — check the calculator.
Alert me when this code changes (free) See all recorded changes
Programmatic access: the full duty stack (base + surcharges + MPF/HMF for a given origin & value) is at /duty?code=2904.31.00.00&origin=&value=. Current as of USITC 2026HTSRev13 (synced 2026-07-29).