Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

The following information is taken into account for any hazard / risk / persistency assessment:

The lifetime of HFO-1234yf in the atmosphere is 10 days indicating it will not persist in the atmosphere.

The OH initiated oxidation of CF3CF=CH2 gives CF3C(O)F and HCHO in almost quantitative yields.CF3C(O)F is removed from the atmosphere via hydrolysis that occurs at a time scale of about 10 days to give CF3C(O)OH, just like 134a (CF3CH2F) does. The available data suggest that while CF3C(O)OH is not a natural component of the freshwater environment, it is a natural component of the background oceanic environment, and any additional burden associated with CF3CF=CH2oxidation will be of negligible environmental significance.

Value used for CSA:

HFO-1234yf is not expected to persist in the atmosphere.