U.S. exports of Other Perfluorooctane Sulfonamides (NESOI) (HS 293550) totaled $10K in August 2026.
Other Perfluorooctane Sulfonamides (NESOI) imports of $6K in August 2026 ran 92% below the year-to-date monthly average of $81K.
Last updated: August 2026 dataServing as the residual provision for perfluorooctane sulfonamide compounds not enumerated in headings 293510 through 293540, this NESOI heading captures less common PFAS sulfonamide variants under tariff line 2935500000. India and Japan are the leading documented US suppliers, with the Netherlands also a source. Importers must confirm that a compound genuinely falls outside the four specifically enumerated headings before using this residual classification, as misclassification among the PFAS sulfonamide series is a recurring audit issue.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
1 import shipments a month
The four preceding headings (293510–293540) each cover a named N-substituent combination: N-methyl, N-ethyl, N-ethyl-N-(2-hydroxyethyl), and N-(2-hydroxyethyl)-N-methyl. Any perfluorooctane sulfonamide with a different substituent pattern — such as a diethyl or N-propyl variant — would fall into this NESOI provision. A structural analysis confirming the substituents is the essential classification document.
Generally yes — EPA's TSCA Significant New Use Rules for PFOS-related substances are defined by the perfluorooctane sulfonate/sulfonamide chemical family, not by the specific N-substituent. Importers of any compound in this series should review current SNUR coverage and consult EPA guidance or legal counsel before importation.
Trade Directory
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Subheading 3 of 6 in heading 2935
Subheading 293550 · $10K of $8.5M
ImportsExports
Imports
$6KYoY · free account
Exports
$10KYoY · free account
Low of 8 reported months · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $768K of Other Perfluorooctane Sulfonamides (NESOI) and exported $125K.
Fewer than 6 of the last 12 months reported trade, or the latest month was under $500K; the trend chart is not shown for thin series.
Through August 2026 · imports 8 of 12 months reported, exports 8 of 12 months reported. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2935500000 | Other Perfluorooctane Sulfonamides | $6K | 16.49% | 100.00% | $1K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2935500000 | Other Perfluorooctane Sulfonamides | $10K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Exports · August 2026
destination
Mexico and Canada together take 100% of it.
customs district
origin
entry
rate provision · imports
duty collected equals 16.49% of imports for consumption.