Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

DEGDB:

Bioaccumulation:

- Supporting study, reliability 2, QSAR-estimation - EPIWIN (BCFBAF v 3.00) -BCF values <100 L/kg

DPGDB:

Bioaccumulation:

- Supporting study, reliability 2, QSAR-estimation - EPIWIN (BCFBAF v 3.00) -BCF values <200 L/kg

Additional information

This substance is a reaction mass of dipropylene glycol dibenzoate (DPGDB), diethylene glycol dibenzoate (DEGDB) and triethylene glycol dibenzoate (TEGDB).

 

No testing is proposed or required.

  

Bioaccumulation: aquatic/sediment

According to the adaptations found in column 2 of annex IX, the bio-concentration in aquatic species study can be waived if direct and indirect exposure to the aquatic environment is unlikely. This substance has no defined uses where direct application to the aquatic environment would occur, and because the substance is readily biodegradable, wastewater treatment would also make indirect exposure to the aquatic environment unlikely.

QSAR estimates have been made for two components (DPGDB, DEGDB) of the reaction mass. Evidence of a low bioaccumulation potential is provided by these estimates, showing BCF values <200 L/kg for DPGDB and <100 L/kg for DEGDB, using a regression method based upon the experimental log Kow of 3.9 for DPGDB (HLS, 1999, VCL249/972399) and of 3.2 for DEGDB (HLS 1999, VCL261/972408) and using the Arnot-Gobas QSAR method the BCF/BAF values for all trophic levels are < 10 L/kg when biotransformation rates are utilized. From the similarity of its properties, TEGDB would be expected to behave in the same way. For these reasons, and for animal welfare reasons, it is believed that a bio-concentration study is not justified and is not proposed.

Bioaccumulation: terrestrial

No data available. No data required.