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perfluorononanoic acid

n. (context chemistry English) A synthetic perfluorinated carboxylic acid and fluorosurfactant that is also an environmental contaminant.

Wikipedia
Perfluorononanoic acid

Perfluorononanoic acid, or PFNA, is a synthetic perfluorinated carboxylic acid and fluorosurfactant that is also an environmental contaminant found in people and wildlife along with PFOS and PFOA.