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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Not readily biodegradable, OECD 301 B & EU Method C.4-C, Grade 1996

Key value for chemical safety assessment

Biodegradation in water:
under test conditions no biodegradation observed

Additional information

Grade (1996) has been provided as the key study to address the ready biodegradability of the test material. The degradability of the test material was determined in a carbon dioxide evolution test.

Under the conditions of the test no biodegradation of the test material was observed within the 29 Day period. The mineralisation of the test material was 0 % by Day 29. Furthermore the test material did not inhibit the biodegradation of the reference substance, which reached 86 % degradation by Day 23. The study is considered to be reliable, relevant and adequate for risk assessment purposes.


The study was performed to a high standard, in line with GLP and in accordance with standardised guidelines and has thus been assigned a reliability score of 1 in line with the principles for assessing data quality set out in Klimisch (1997).


The available data are considered to be complete and the conclusion that the test material is not biodegradable in water has been taken forward for risk assessment.