Pet Safety / Compounds / 8:2 FTS (8:2 Fluorotelomer sulfonate)

Is 8:2 FTS (8:2 Fluorotelomer sulfonate) safe for dogs and cats?

Moderate risk for pets

Not veterinary or professional safety advice, and not a substitute for a veterinarian — consult one about your animal. Full disclaimer →

Dogs on military installations show elevated PFAS blood levels including 8:2 FTS transformation products.

What is 8:2 fts (8:2 fluorotelomer sulfonate)?

The IUPAC name is 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodecane-1-sulfonate.

Also known as: 1H,1H,2H,2H-Perfluorooctanesulfonic acid (38% aqueous solution), 2-(Perfluorooctyl)ethane-1-sulfonate, 481071-78-7, DTXSID80873416.

IUPAC name
3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodecane-1-sulfonate
CAS number
39108-34-4
Molecular formula
C8H5F13O3S
Molecular weight
428.17 g/mol
SMILES
C(CS(=O)(=O)[O-])C(C(C(C(C(C(C(C(F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F
PubChem CID
20734545

Risk for dogs

Moderate risk

Dogs on military installations show elevated PFAS blood levels including 8:2 FTS transformation products.

Risk for cats

Moderate risk

Limited exposure data for cats.

Regulatory consensus

2 regulatory and scientific bodies have classified 8:2 FTS (8:2 Fluorotelomer sulfonate). The classifications differ — that's the data.

AgencyYearClassificationNotes
EPA——
DoD——Key analyte in DoD PFAS site investigations

Regulators apply different standards of evidence — animal-data weighting, exposure-pattern assumptions, epidemiological power thresholds — which is why two scientific bodies can review the same data and reach different conclusions. The disagreement is the data.

Where pets encounter 8:2 fts (8:2 fluorotelomer sulfonate)

  • Firefighting Foam — AFFF concentrates, Fire training area runoff, Airport fire suppression systems
    Primary marker for AFFF contamination at military/airport sites
  • Drinking Water — Groundwater near AFFF sites, Municipal water near military bases
    EPA UCMR5 analyte — detected at multiple DoD installations

Safer alternatives

Lower-risk approaches that achieve a similar outcome to 8:2 FTS (8:2 Fluorotelomer sulfonate):

  • Fluorine-free firefighting foams (F3)
    Trade-offs: Functional performance and cost-effectiveness may vary by application.
    Relative cost: Lower (ingredient elimination)
  • Short-chain 6:2 FTS-based foams (less bioaccumulative transformation products)
    Trade-offs: Functional performance and cost-effectiveness may vary by application.
    Relative cost: 1.2-2×

Frequently asked questions

Is 8:2 fts (8:2 fluorotelomer sulfonate) safe for pets?

Dogs on military installations show elevated PFAS blood levels including 8:2 FTS transformation products.

What products contain 8:2 fts (8:2 fluorotelomer sulfonate)?

8:2 FTS (8:2 Fluorotelomer sulfonate) appears in: AFFF concentrates (firefighting foam); Fire training area runoff (firefighting foam); Groundwater near AFFF sites (drinking water); Municipal water near military bases (drinking water).

See 8:2 FTS (8:2 Fluorotelomer sulfonate) in the pets app

Look up products containing 8:2 fts (8:2 fluorotelomer sulfonate), compare to alternatives, and explore the full data record.

Open in pets View raw API data

Sources (1)
  1. — expert_curation

Reference data, not professional advice. Aggregates publicly available regulatory and scientific data; not a substitute for veterinary, medical, legal, or regulatory advice. Why we built ALETHEIA →