SHEET /m/perfluorooctanesulfonic-acid · PubChem CID 74483 · CAS 1763-23-1 · REV 2026.07
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Perfluorooctanesulfonic acid
from sourceC8HF17O3S · 500.13 g/mol
PFOS
What is Perfluorooctanesulfonic acid?
PFOS, a PFAS surfactant once used in fire-fighting foams, floor polishes, metal plating and circuit-board etching. 3M phased it out by 2001. from source
CategoryEveryday chemistry
Chemical familyHalogenated
Fig. 1 · 2D structure RDKit
SMILES
C(C(C(C(C(F)(F)S(=O)(=O)O)(F)F)(F)F)(F)F)(C(C(C(F)(F)F)(F)F)(F)F)(F)FRelative acute toxicity from source
Animal study data · LD50
- Reported LD50
- 154 mg/kg · moderately toxic
- Species
- rat
- Route
- oral
An LD50 describes acute toxicity under experimental conditions and is not a safe or dangerous dose for a person.
Toxicity & hazards
Toxicity · LD50
154 mg/kg · moderately toxic · LD50 rat oral from source
1 more reported value
- 251 mg/kgLD50 · oral · rat
DangerCorrosiveToxicIrritantHealth hazardEnvironmentalH301, H302, H314, H318, H320, H331, H332, H351, H360, H362, H372, H401, H411from source
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Where Perfluorooctanesulfonic acid leads
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