EPA TSCA 8(a)(7) · 40 CFR 705

PFAS checker by CAS number

Find the PFAS in your imports before EPA's reporting window opens.

Paste CAS numbers or names to see which are on EPA's public list of TSCA PFAS for the 8(a)(7) rule, with the name as it appears on the TSCA Inventory.

Last updated 2026-09-28. Math runs in your browser, no data leaves your computer.

Paste every component from SDS Section 3 or the COA, one per line. The tool checks each line against its copy of EPA's public list of TSCA PFAS, last updated by EPA on 16 May 2024, and nothing you paste leaves the browser.

A CAS number is the surest match, because the list prints names in the long TSCA Inventory style that trade names rarely follow. Up to 300 lines run at once.

Before the booking, screen the name on the invoice. Shipment pre-check is on the paid plans, from USD 59 a month.

General guidance only. Verify against the cited primary sources before you commit to a shipment, declaration, or contract.

How the match works

A CAS number is matched exactly against the 613 public rows of the EPA workbook, and the tool also runs the CAS check digit so a typo shows up instead of a false miss. A name is matched when the list name contains it, which works for inventory style names such as "Ethene, 1,1,2,2-tetrafluoro-, homopolymer" and not for trade names such as Teflon.

The other 611 rows cover PFAS whose identity is confidential business information, listed only by a generic name and a TSCA accession number. A name search also runs over those generic names, so "fluoroelastomer" or "fluorinated acrylic" shows the confidential listings a supplier's vague SDS may be pointing at.

The rule reaches further than the list. 40 CFR 705.3 defines PFAS as any substance holding at least one of three fluorinated sub-structures, and the list is EPA's aid to spotting them. Any fluorinated component that misses here still needs a chemist to check its structure.

Worked example. The fluoropolymer resin nobody called PFAS

The booking. A US importer has brought in PVDF resin from a Zhejiang producer every year since 2016 for lithium battery binder customers. The compliance team keys the trade name into a search, finds no "PFAS" label on the SDS, and leaves the resin off its 8(a)(7) reporting plan, which looks fine on paper.

The failure. Pasting the COA's CAS number, 24937-79-9, returns a hit on EPA's list under the inventory name "Ethene, 1,1-difluoro-, homopolymer". Every year of those imports since 2016 falls inside the 2011 look back, so the importer is a reporter. The choice is simple: build the report from ten years of entry records now, or explain the gap to EPA later.

The fix. The importer pulls entry summaries back to 2016 from its broker, totals the kilograms per year, and asks the producer for the use and hazard data the report needs. The file is ready before the window opens, which under the April 2026 rule is no later than 31 January 2027.

Need the TSCA Inventory status and the other US and Australian flags on the same CAS numbers? The chemical import flags tool checks them in one pass, and the TSCA import wording page gives the positive or negative certification text for the entry.

Frequently asked

What is the TSCA 8(a)(7) PFAS reporting rule?

It is the EPA rule at 40 CFR Part 705 that requires anyone who manufactured or imported PFAS, or articles containing PFAS, in any year since 1 January 2011 to report uses, volumes, disposal, exposure and hazard data to EPA through CDX. Importing counts as manufacturing under TSCA, so a buyer who brought PFAS in from China is a reporter even if it never made a molecule.

When is the TSCA PFAS report due?

EPA's final rule of 13 April 2026 (FR Doc. 2026-07062) moved the start of the submission window to 31 January 2027, or 60 days after a forthcoming final revisions rule, whichever is earlier. The window then runs six months, or twelve months for a small manufacturer whose only duty comes from importing articles. The 13 October 2026 date that many pages still quote came from the May 2025 interim rule and no longer applies.

Is a chemical that is not on the EPA list safe from reporting?

Not necessarily, because the rule defines PFAS by structure in 40 CFR 705.3, and EPA's own workbook says a substance missing from the list may still be reportable, for example a byproduct, an impurity, an R&D substance, or a substance whose identity is confidential. Check the structure of any fluorinated substance against the three sub-structures in the definition before you mark it clear.

Are PTFE and PVDF on the TSCA PFAS list?

Both CAS numbers are on EPA's public list: polytetrafluoroethylene, 9002-84-0, and polyvinylidene fluoride, 24937-79-9. EPA lists them under the inventory names "Ethene, 1,1,2,2-tetrafluoro-, homopolymer" and "Ethene, 1,1-difluoro-, homopolymer", so a fluoropolymer resin bought from China is on the list even when the SDS never says PFAS. Paste the CAS numbers from the COA to see the exact listing.

Will EPA narrow the rule before reporting opens?

EPA proposed in November 2025 (FR Doc. 2025-19882) to exempt PFAS in mixtures or products at 0.1 percent or less, imported articles, certain byproducts, impurities, R&D chemicals and non-isolated intermediates. Those are proposals, and as of 28 September 2026 no final revisions rule had been published. Keep your import records from 2011 onward until the final rule settles it.

Does this cover Australia?

This list covers the United States only. Australia schedules some PFAS under the Industrial Chemicals Environmental Management Standard (IChEMS) run by DCCEEW, so an Australian importer should check that register and its AICIS obligations separately.

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Related tools

Sourzi shows what official files say. It is not customs or legal advice. For a binding answer, ask a licensed customs broker, a CBP ruling or an Australian Border Force Tariff Advice.

File dates and links are on Data sources.