Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information


After evaporation or exposure to the atmosphere, the substance will be rapidly degraded by photochemical processes.



In accordance with column 2 of REACH Annex VII, the study does not need to be performed if the substance is readily biodegradable or inorganic. Propylenediamine is readily biodegradable; therefore a study is not required. Further, according to Kollig et al. (1993), Boethling & Mackay (2000), hydrolysis is not expected to be a relevant degradation process due to the absence of hydrolysable groups.



Regarding the result of a test on ready biodegradability using the analogous substance trimethylenediamine (CAS 109 -76 -2), the substance is considered as readily biodegradable according to OECD criteria.



Significant accumulation in organisms is not to be expected.


Transport and distribution:

Adsorption / desorption

Adsorption of the substance to the solid soil phase is not expected under environmentally relevant conditions.


Henry's Law constant

From the water surface, the substance will not evaporate into the atmosphere.


Distribution modelling

Over time, the substance will preferentially distribute into the compartment water (97.3%) and air (2.7%).

The substance is supposed to be charged under environmentally relevant conditions. Therefore the distribution into water may be still underestimated.