PFAS are a family of man-made chemicals that contain carbon, fluorine, and other elements. The family tree image below, Figure 1, shows some of the different families of PFAS. For simplicity, it does not include all PFAS subfamilies. Follow along – starting at the “fallen apple” of PFC and then continuing up the tree trunk into the branches.

Per‐ and polyfluoroalkyl substances (PFASs) family tree including perfluoroalkyl acids (PFAAs), PFAA precursors (e.g., perfluoroalkane sulfonyl fluorides and fluorotelomers), and polymers...

This variety of PFAS with diverse properties is organized in the form of a PFAS family tree that includes two primary classes: polymers and nonpolymers. Each class may contain many subclasses, groups, and subgroups, some of which are shown in the figure.

FASAs biodegrade to PFSAs, with the potential to degrade to PFSAs and PFCAs in the atmosphere – see Figure 2-11. The family tree is based on the PFAS definition provided in Buck et al. 2011[156] and OECD 2021[2318] .

PFAS are a family of man-made chemicals that contain carbon, fluorine, and other elements. The family tree image, Figure 1, shows some of the different families of PFAS. For simplicity, it does not include all PFAS subfamilies. Follow along – starting at the “fallen apple” of PFC and then continuing up the tree trunk into the branches.

Per-and Polyfluoroalkyl Substances (PFAS) Family Tree Author: ITRC Subject: PFAS chart, listing polymers and non-polymers, perfluoroalkyl substances and polyfluoroalkyl substances, fluroropolymers, and polymeric perfluoropolyethers \(PFPE\). Keywords: PFAS, polymers, non-polymers, perfluoroalkyl, polyfluoroalkyl, polymeric perfluoropolyethers ...

Future updates to the family tree and nomenclature are expected given the evolving public knowledge of these compounds. This fact sheet focuses primarily on nonpolymer PFAS most commonly detected in the environment. Additional information is available in …

Nov 12, 2024 · Use our PFAS Blood Level Estimation tool to understand how much PFAS may be in your bloodstream. Questions to ask healthcare professionals, along with information on PFAS exposure. Learn about ATSDR's Minimal Risk Levels to identify environmental exposures that might harm people’s... Find additional information about PFAS.

Dec 19, 2024 · View the Family Tree of PFAS (PDF). Where are PFAS found? While PFOA and PFOS have been phased out from their use in commercial products, they are still found in the environment from historical uses and in some firefighting foams.

The PFAS Family Tree 1. PFAS are fluorinated molecules that are widely used in industry and in diverse products and processes. Examples include water-repelling textiles, grease-resistant paper, nonstick packaging and cooking appliances, medical and laboratory tubing, aqueous film-forming foams, and industrial detergents.