HFPO-DA

14 source-reported values from 5 filed studies. Values are shown as printed in each source, with the basis and page. Studies differ in samples, methods and limits, so values are not directly comparable. Measured samples do not represent every product on the market.

Identity

Hexafluoropropylene oxide dimer acid. Terminology authority. This citation supports the label only.

TODO: verify the applicable chemical form and identifier before populating a CAS field. Class and aggregate measurement pages require a scope definition rather than an assumed substance identifier.

Occurrence evidence

product	value	unit	basis	source location	source
Bottled drinking water (purified, spring, artesian)	0.13	ng/L	bottled-water mean	PDF p. 11, Table 2, Bottled Water Mean	Unregulated and Regulated PFASs in Bottled and Tap Water: Occurrence, Co-Occurrence Patterns, and Implications for Human Health and Regulatory Frameworks
Tap drinking water	0.25	ng/L	drinking-water sample D1	PDF p3, Table 1, D1 row	Presence of Emerging Per- and Polyfluoroalkyl Substances (PFASs) in River and Drinking Water near a Fluorochemical Production Plant in the Netherlands
Tap drinking water	0.48	ng/L	drinking-water sample D2	PDF p3, Table 1, D2 row	Presence of Emerging Per- and Polyfluoroalkyl Substances (PFASs) in River and Drinking Water near a Fluorochemical Production Plant in the Netherlands
Tap drinking water	11	ng/L	drinking-water sample D3	PDF p3, Table 1, D3 row	Presence of Emerging Per- and Polyfluoroalkyl Substances (PFASs) in River and Drinking Water near a Fluorochemical Production Plant in the Netherlands
Tap drinking water	<0.2	ng/L	drinking-water sample D4	PDF p3, Table 1, D4 row	Presence of Emerging Per- and Polyfluoroalkyl Substances (PFASs) in River and Drinking Water near a Fluorochemical Production Plant in the Netherlands
Tap drinking water	<0.2	ng/L	drinking-water sample D5	PDF p3, Table 1, D5 row	Presence of Emerging Per- and Polyfluoroalkyl Substances (PFASs) in River and Drinking Water near a Fluorochemical Production Plant in the Netherlands
Tap drinking water	<0.2	ng/L	drinking-water sample D6	PDF p3, Table 1, D6 row	Presence of Emerging Per- and Polyfluoroalkyl Substances (PFASs) in River and Drinking Water near a Fluorochemical Production Plant in the Netherlands
Tap drinking water	0.2-2.6	ng/L	drinking-water application samples; content range or single reported value	PDF p12, Table 5, Drinking water Content column	Determination of 51 per- and polyfluoroalkyl substances in raw water and drinking water by online solid-phase extraction coupled with ultra performance liquid chromatography-tandem mass spectrometry
Bottled drinking water (purified, spring, artesian)	0.22	ng/L	bottled-water mean based on detections above MDL; ND literal	PDF p. 4 (4398), Table 1 bottled-water mean and footnotes a/f	Tap vs Bottled: Assessing PFAS Levels and Exposure Risks in Singapore’s Drinking Water
Breast milk	8.5	ng/L	Human milk, China (n = 1,151); detection rate (%)	PDF p.6, Table 2, HFPO-DA row, DR (%) column	Emerging and Legacy Perfluoroalkyl Substances in Breastfed Chinese Infants: Renal Clearance, Body Burden, and Implications
Breast milk	<LOQ	ng/L	Human milk, China (n = 1,151); minimum	PDF p.6, Table 2, HFPO-DA row, Min column	Emerging and Legacy Perfluoroalkyl Substances in Breastfed Chinese Infants: Renal Clearance, Body Burden, and Implications
Breast milk	<LOQ	ng/L	Human milk, China (n = 1,151); median	PDF p.6, Table 2, HFPO-DA row, 50th column	Emerging and Legacy Perfluoroalkyl Substances in Breastfed Chinese Infants: Renal Clearance, Body Burden, and Implications
Breast milk	5.527	ng/L	Human milk, China (n = 1,151); 95th percentile	PDF p.6, Table 2, HFPO-DA row, 95th column	Emerging and Legacy Perfluoroalkyl Substances in Breastfed Chinese Infants: Renal Clearance, Body Burden, and Implications
Breast milk	199.1	ng/L	Human milk, China (n = 1,151); maximum	PDF p.6, Table 2, HFPO-DA row, Max column	Emerging and Legacy Perfluoroalkyl Substances in Breastfed Chinese Infants: Renal Clearance, Body Burden, and Implications

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HFPO-DA

Identity

Occurrence evidence

Analytical methods

Regulatory references

Sources

References

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