Differentiating PFAS Series: Can FK-5-1-12 Break Down into Harmful Levels of CO2?


The atmospheric degradation mechanism of FK-5-1-12 looks like this as a balanced equation C2F5(O)CF(CF3)2—-->4CO2+CF3COOH+9HF. Taniguchi concludes the photolysis of the ketone in the air results in a radical, uh, and also carbonyl fluoride will be incorporated in the air cloud and seawater where it'll undergo hydrolysis to, to give the trifluoroacetic acid. Similarly, the carbonyl fluoride will undergo hydrolysis to give CO2 and HF. The CO2, as well as any of these, the other two products that result from reacting with ketone at the concentrations expected in the environment is not considered harmful according to Taniguchi. The concentrations expected from what is going to be emitted into the atmosphere, combined with a short atmospheric lifetime, the global warming potential is negligible.

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