Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Hydrolysis of the test item is not a relevant degradation pathway in the environment. An experimental study did not result in hydrolytic degradation of the test item at pH 5, 7 and 9. Thus, it can be concluded that hydrolysis does not contribute to the overall elimination of the compound from the water phase. If the substance is present in surface water it will not be degraded by irradiation of sunlight. No DT50 values were derived based on the result of one experimental study due to insignificant degradation found. Similar results were found for the photodegradation of the substance in soil. The substance was only slowly degraded in soil samples with difference content of organic carbon (DT50: 309 solar days (New River, AZ, USA; organic carbon 4.1%); 173 solar days (New River, AZ, USA; organic carbon: 1.2%)). A release to the atmospheric compartment is very unlikely due to the low vapour pressure (2.7E-9 hPa at 20 °C) and low Henry’s Law Constant (1.42E-9 Pa*m³/mole). However, if present in the air the substance is degraded quickly in the presence of OH-radicals with a DT50 of 10.3 h (24 h day).
In conclusion abiotic degradation will not contribute to the overall degradation process of the substance in the environment.