PFOS was the key ingredient in Scotchgard, a fabric protector made by 3M, and related stain repellents.
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15 Facts About PFOS
2.
The acronym "PFOS" refers to the parent sulfonic acid and to various salts of perfluorooctanesulfonate.
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3.
Telomerisation involves constructing the PFOS molecule using short chain precursors and adding a sulfonate group as a final step.
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4.
PFOS is an exceptionally stable compound in industrial applications and in the environment because of the effect of aggregate carbon–fluorine bonds.
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5.
PFOS is a fluorosurfactant that lowers the surface tension of water more than that of hydrocarbon surfactants.
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6.
PFOS is detected in the blood serum of almost all people in the U S, but concentrations have been decreasing over time.
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7.
PFOS exposure has been demonstrated as early as fetal development during pregnancy since PFOS can easily pass through the placenta.
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8.
Variety of wildlife species have had PFOS levels measured in egg, liver, kidney, serum, and plasma samples and some of the highest recorded values as of January 2006 are listed below.
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9.
Additionally, PFOS exposure has been shown to be related to the downregulation genes corresponding to growth factors, pregnancy-related signal transducers, and maternal hormones.
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10.
PFOS has been measured in breastmilk and is estimated to contribute the greatest level of PFOS exposure in infants.
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11.
PFAS compounds such as PFOS act as an endocrine disruptor of the reproductive system.
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12.
PFOS has been associated with increased risk of abnormal levels of cholesterol.
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13.
Serum levels of PFOS were found to be associated with increased risk of chronic kidney disease in the general US population.
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14.
PFOS affects the immune system of male mice at a blood serum concentration of 91.
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15.
In 2020 the Michigan Department of Environment, Great Lakes, and Energy adopted stricter drinking water standards in the form of maximum contaminant levels, lowering acceptable levels from the 2018 enforceable groundwater cleanup levels of 70 ppt to 8 ppt for PFOA and 16 ppt for PFOS and adding MCLs for 5 previously unregulated PFAS compounds PFNA, PFHxA, PFHxS, PFBS, and HFPO-DA.
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