Perfluorooctane sulfonate (PFOS)

IUPAC Name: 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluorooctane-1-sulfonic acid

Source: Used in the production of organic compounds containing fluorine. Used as a surfactant and water repellent on fabrics.

Water Treatment: https://tdb.epa.gov/tdb/contaminant?id=10940

Summary: Perfluorooctane sulfonate (PFOS) is a member of the perfluoroalkyls (PFAS). It is a very persistent chemical in the environment. It is used for its properties as a water and grease repellent. Its main use is in fabric protection and organic synthesis, but it is also used in fire-fighting foams. It has been phased-out of use since 2002. It is soluble in water up to 0.0032 mg/L at 25 C. As a vapor in the atmosphere it will be degraded with a half-life of 115 days. It may travel long distances as an aerosol as it can adsorb to particulates in the air. Low mobility within soil is expected. It may form within the environment as a transformation product of other chemicals. Bioaccumulation in organisms is expected to be high.

GHS Hazard Statement: H301, H302, H314, H320, H332, H351, H360, H360D, H362, H372, H401, H411, GHS05, GHS06, GHS07, GHS08, GHS09