4:2 FTS (4:2 Fluorotelomer sulfonate)
CAS: 757124-72-4 | Type: organic_pollutant
Moderate Risk (Adults)
Safety Summary
Hazard ProfileShort-chain fluorotelomer sulfonate found in AFFF and as transformation product of fluorotelomer-based products. Included in EPA UCMR5. Detected at AFFF-contaminated sites. Considered less bioaccumulative than 6:2 and 8:2 FTS but still extremely persistent.
Risk (Adults)Moderate
Risk (Children)Moderate
Risk (Dogs)Low Moderate
Risk (Cats)Low Moderate
Regulatory Status
SummaryNo major regulatory flags
Molecular FormulaC6H5F9O3S
Molecular Weight328.15
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