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HSChapter 29
U.S. imports of other salts of perfluorooctane sulfonic acid (HS 290435) totaled $3K in April 2026, traded with 2 countries.
Other Salts of Perfluorooctane Sulfonic Acid imports of $3K in April 2026 ran 95% below the year-to-date monthly average of $51K.
Last updated: April 2026 dataBeyond the lithium and potassium forms, the remaining PFOS salts — ammonium, diethanolammonium, and others — are consolidated under a single US tariff line (2904350000). China and Norway are the leading sources of these materials, reflecting both legacy chemical manufacturing capacity and specialty production for niche industrial applications. Like all PFOS-related substances, these salts are subject to EPA TSCA oversight and may face import restrictions tied to persistent organic pollutant frameworks.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
All other salts of perfluorooctane sulfonic acid not separately enumerated enter under tariff line 2904350000. Goods of Chinese origin in this heading are subject to Section 301 tariffs; Norwegian-origin goods are not subject to Section 301 but should be assessed for any applicable MFN duty.
China's large-scale fluorochemical manufacturing base makes it a volume supplier of PFOS salts broadly, while Norway's presence reflects specialized industrial chemistry capacity, historically linked to electrochemical and specialty surfactant production. Supply concentration in these two countries creates meaningful origin-diversification risk given the evolving regulatory environment around PFAS substances.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2904350000 | OTHER SALTS OF PERFLUOROOCTANE SULFONIC ACID | $3K | 13.70% | $377 |
OTHER SALTS OF PERFLUOROOCTANE SULFONIC ACID
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2904350000 | OTHER SALTS OF PERFLUOROOCTANE SULFONIC ACID | $78K |
OTHER SALTS OF PERFLUOROOCTANE SULFONIC ACID
37.7K kg
NUCLEIC ACIDS & SALTS; OTHER HETEROCYCLIC CMP, NES
HS 293499
HETEROCYCLIC COMP W NITROGEN HETERO-ATM ONLY NESOI
HS 293399
POLYPEPTIDE PROTEIN& GLYCOPROTEIN HORMONES &DERIV
HS 293719
CMPDS CONT AN UNFUSED PYRIDINE RING ETC NESOI
HS 293339
COMP WITH PYRIMIDINE OR PIPERAZINE RING, NESOI
HS 293359
ANTIBIOTICS, NESOI
HS 294190
| State | Imports | Exports | Balance |
|---|---|---|---|
| Illinois | -- | $78K | +$78K |
| California | $3K | -- | -$3K |
| Ohio | -- | -- | -- |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| PORTAL, ND | -- | $72K | +$72K |
| PEMBINA, ND | -- | $5K | +$5K |
| JFK INTERNATIONAL AIRPORT, NY | $3K | -- | -$3K |