ethene, tetrafluoro-, polymer with 1,1-difluoroethene and trifluoro(trifluoromethoxy)ethene, CAS 56357-87-0
2 companies have told Minnesota that this compound is intentionally added to 5 of their products, in 7 filings across 2 components. 1 of those filings report the part is 90 to 100% this compound by mass. Each row names the product, where in it the compound sits and what it is there to do.
- Disclosures
- 7
- Companies
- 2
- Products
- 5
- CAS number
- 56357-87-0
How much is reported
Concentration bands as filed, heaviest declared first, with filings that give no concentration at the bottom. Counts are of filings, since one product can report more than one compound.
- 90 to 100%1 filing
- 600,000 to <900,000 ppm (90%)6 filings
All 7 filings
- Where in the product,
- Raw Material (Unformed) - Others
- What it is doing,
- Resins (prepolymers)
- Compound,
- ethene, tetrafluoro-, polymer with 1,1-difluoroethene and trifluoro(trifluoromethoxy)ethene (CAS 56357-87-0)
- How much the filer reports,
- 90 to 100%
HTS 3904.69.1000 · Minnesota disclosure MN-JPENFTO · published 2026-08-12
- Where in the product,
- O-ring/Gasket/Seal
- What it is doing,
- Sealant
- Compound,
- ethene, tetrafluoro-, polymer with 1,1-difluoroethene and trifluoro(trifluoromethoxy)ethene (CAS 56357-87-0)
- How much the filer reports,
- 600,000 to <900,000 ppm (90%)
HTS 8421.23.0000 · Minnesota disclosure MN-170RZWX · published 2026-09-29
- Where in the product,
- O-ring/Gasket/Seal
- What it is doing,
- Sealant
- Compound,
- ethene, tetrafluoro-, polymer with 1,1-difluoroethene and trifluoro(trifluoromethoxy)ethene (CAS 56357-87-0)
- How much the filer reports,
- 600,000 to <900,000 ppm (90%)
HTS 8413.60.0030 · Minnesota disclosure MN-170RZWX · published 2026-09-29
- Where in the product,
- O-ring/Gasket/Seal
- What it is doing,
- Sealant
- Compound,
- ethene, tetrafluoro-, polymer with 1,1-difluoroethene and trifluoro(trifluoromethoxy)ethene (CAS 56357-87-0)
- How much the filer reports,
- 600,000 to <900,000 ppm (90%)
HTS 8411.91.7010 · Minnesota disclosure MN-170RZWX · published 2026-09-29
- Where in the product,
- O-ring/Gasket/Seal
- What it is doing,
- Sealant
- Compound,
- ethene, tetrafluoro-, polymer with 1,1-difluoroethene and trifluoro(trifluoromethoxy)ethene (CAS 56357-87-0)
- How much the filer reports,
- 600,000 to <900,000 ppm (90%)
HTS 8484.20.0000 · Minnesota disclosure MN-170RZWX · published 2026-09-29
- Where in the product,
- O-ring/Gasket/Seal
- What it is doing,
- Sealant
- Compound,
- ethene, tetrafluoro-, polymer with 1,1-difluoroethene and trifluoro(trifluoromethoxy)ethene (CAS 56357-87-0)
- How much the filer reports,
- 600,000 to <900,000 ppm (90%)
HTS 3926.90.4510 · Minnesota disclosure MN-170RZWX · published 2026-09-29
- Where in the product,
- O-ring/Gasket/Seal
- What it is doing,
- Sealant
- Compound,
- ethene, tetrafluoro-, polymer with 1,1-difluoroethene and trifluoro(trifluoromethoxy)ethene (CAS 56357-87-0)
- How much the filer reports,
- 600,000 to <900,000 ppm (90%)
HTS 8421.29.0065 · Minnesota disclosure MN-170RZWX · published 2026-09-29
Other compounds in the filings
- poly(tetrafluoroethylene) (PTFE)14,002
- Ethene, 1,1,2,2-tetrafluoro-, homopolymer12,349
- Fluoropolymers10,203
- poly(vinylidene fluoride-co-hexafluoropropylene) (VDF-co-HFP (FKM 1))5,191
- potassium 1,1,2,2,3,3,4,4,4-nonafluorobutane-1-sulfonate2,420
- PFAS Present but unknown at this time2,305
- 1-Propene, 1,1,2,3,3,3-hexafluoro-, polymer with 1,1,2,2-tetrafluoroethene1,214
- Methyl(3,3,3-trifluoropropyl)silanone1,213
- poly(tetrafluoroethylene-co-hexafluoropropylene) (FEP)1,187
- 1-Propene, 1,1,2,3,3,3-hexafluoro-, oxidized, polymd.1,115
- 1,1-Difluoretylen-hexafluorpropenpolymer986
- Ethene, 1,1,2,2-tetrafluoro-, oxidized, polymd777
Source, manufacturer filings made to the Minnesota Pollution Control Agency under the state’s PFAS in Products law and published through PRISM, run by the Interstate Chemicals Clearinghouse. These are the manufacturers’ own statements, not our grades and not laboratory results. A filing covers the product as sold in Minnesota and says nothing about products or formulations the company did not file. Reporting was still open when this was pulled, so absence from the set is not evidence a product is PFAS-free.