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HSChapter 29
U.S. imports of tetraethylammonium perfluorooctane sulfonate (HS 292330) totaled $2K in June 2026, traded with 1 country.
Tetraethylammonium Perfluorooctane Sulfonate imports of $2K in June 2026 ran 500% above the year-to-date monthly average of $344.8333333333333.
Tetraethylammonium perfluorooctane sulfonate (TEAOS) is a PFAS compound historically used in specialty electroplating, semiconductor processing, and certain fire-suppression formulations. EPA's ongoing regulatory actions targeting perfluorooctane sulfonate (PFOS) compounds directly affect the admissibility and end-use of this substance, and importers should verify current Toxic Substances Control Act (TSCA) compliance before shipment. China is the dominant supplier, with Switzerland a secondary source, reflecting the concentration of PFAS chemical manufacturing in Asia alongside Swiss specialty-chemical producers.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Imports of PFOS-related substances fall under EPA's Toxic Substances Control Act (TSCA) framework. Importers must certify TSCA compliance at entry, and certain PFOS uses are subject to EPA significant new use rules (SNURs) or outright restrictions. Consulting an environmental compliance specialist before importation is strongly advised given the evolving regulatory landscape.
Imports of specialty fluorochemicals from China may be subject to Section 301 tariffs. Because rates and product coverage under Section 301 can change, importers should verify the current status of applicable tariff actions against the specific HTS line 2923300000 at the time of entry.
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Monthly import values over time
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2923300000 | TETRAETHYLAMMONIUM PERFLUOROOCTANE SULFONATE | $2K | 16.19% | 100.00% | $335 |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2923300000 | TETRAETHYLAMMONIUM PERFLUOROOCTANE SULFONATE | $3K |
NUCLEIC ACIDS & SALTS; OTHER HETEROCYCLIC CMP, NES
HS 293499
POLYPEPTIDE PROTEIN& GLYCOPROTEIN HORMONES &DERIV
HS 293719
CMPDS CONT AN UNFUSED PYRIDINE RING ETC NESOI
HS 293339
BENZENE
HS 290220
HETEROCYCLIC COMP W NITROGEN HETERO-ATM ONLY NESOI
HS 293399
HETEROCYCLIC COMP WITH UNFUSED PYRAZOLE RING NESOI
HS 293319
| Country | Imports | Exports | Balance |
|---|---|---|---|
| CANADA | -- | $3K | +$3K |
| UNITED KINGDOM | $2K | -- | -$2K |
| PERU | -- | -- | -- |
| BAHRAIN | -- | -- | -- |
| VENEZUELA | -- | -- | -- |
| State | Imports | Exports | Balance |
|---|---|---|---|
| South Carolina | -- | $3K | +$3K |
| Michigan | $2K | -- | -$2K |
| Tennessee | -- | -- | -- |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| DETROIT, MI | -- | $3K | +$3K |
| NEW ORLEANS, LA | $2K | -- | -$2K |
| PORT EVERGLADES, FL | -- | -- | -- |