Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Phototransformation

After evaporation or exposure to the air, the reaction mass will be rapidly degraded by photochemical processes.

 

Hydrolysis

According to structural properties, hydrolysis is not expected.

 

Biodegradation

The reaction mass of 2 -piperazin-1 -ylethanol, piperazine-1,4 -diethanol and piperazine (50, 25 and 25%) is assessed to be not readily biodegradable based on a weight-of-evidence approach.

Since the reaction mass or the majority of its components are neither considered as readily nor as inherently biodegradable, no significant degradation of the reaction mass is expected. However, there is some evidence that piperazine may be considered as readily biodegradable. Based on the available screening data significant biodegradation cannot be expected for the reaction mass in the environment. This finding is supported by the chemical structures of 2 -piperazin-1 -ylethanol and piperazin-1,4 -diethanol which indicate a low potential for biodegradation. Therefore, no further tests on biodegradation are performed because it is not expected that further testing will significantly change this assessment.

 

Bioaccumulation

Accumulation in organisms is not to be expected.

 

Adsorption

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

 

Henry's Law Constant

From the water surface, the major components of the reaction mass will not evaporate into the atmosphere under environmentally relevant conditions.

 

Distribution

Over time, the major components will preferentially distribute into the compartment water (>=99.1%).