Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Biodegradation in water: screening tests

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

Readily biodegradable: key study 79.5% and 70.8% (CO2 evolution) biodegradation in replicates 1 and 2 by day 15, 10-day window met (OECD TG 301B)

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

Two ready biodegradability tests are available for Ethylhexyl diphenyl phosphate, carried our according to OECD TG 301B (CO2 -evolution, Tunink, 2009) and OECD TG 301D with small deviations (Closed Bottle, Van Ginkel, 2010). Both studies have reliability 1, therefore the study which revealed the highest % biodegradation was chosen as the key study. In the key study (Tunink, 2009) the test substance systems yielded CO2 values of 79.5% and 70.8% for replicates 1 and 2, respectively, by Day 15 of the study. Since the biodegradation values of replicate 1 and replicate 2 were greater than 60% ThCO2 within a 10-day window of reaching 10% ThCO2, these results indicate that the composition of the test substance is readily biodegradable. This result is supported by a result of 65% biodegradation at day 28 (meeting the 10 -day window) in the supporting study (Van Ginkel, 2010).