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Environmental fate & pathways

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Based on the molecular structure, hydrolysis is not expected to be a relevant degradation mechanism for hexafluoro-1,3-butadiene in the environment. Rather, the substance tends to oxidize rapidly in the atmosphere via reactions with photochemically produced OH-radicals (Acerboni et al., 2001). Its atmospheric lifetime was estimated to be 1.1 to 1.9 days in two different studies (Acerboni et al., 2001; Wallington and Hurley, 2011). It is not expected to contribute to ozone depletion or global warming (100-year GWP: 0.027). The degradation products identified, carbonyl fluoride and trifluoroacetyl fluoride, are then incorporated into raindrops/aerosols when in contact with the water phase in the atmosphere, and can be further converted to hydrogen fluoride, carbon dioxide and trifluoroacetic acid.

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