PFNA

A nine-carbon fluorinated acid once used in surfactants and polymer manufacture, and a persistent contaminant found in food, water and blood.

Type
Per- and polyfluoroalkyl substance
How serious
High severity
Evidence
Strong evidence

Why it is flagged

A long-chain PFCA, prohibited in Canada since 2016 and listed under the Stockholm Convention in 2025. One of the four PFAS behind EFSA's tolerable intake; human studies link it to altered thyroid hormones and reduced fertility.

Health topics it bears on

Sources

Also listed as

pfna, perfluorononanoate, c9 pfca, perfluoro-n-nonanoic acid

Similar ingredients