Registration Dossier

Environmental fate & pathways

Biodegradation in water: screening tests

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

The biodegradability of the substance was determined using the CO2 evolution method. The substance cannot be considered to be readily biodegradable under the strict terms and conditions of OECD Guideline 301B.

Key value for chemical safety assessment

Biodegradation in water:
under test conditions no biodegradation observed

Additional information

Two biodegradation tests are available (Clark N., 2010 and Stillmeadow Inc., 2006) measuring the biodegradability of the substance following the OECD 301B guideline. The biodegradation of the substance exposed to a microbial inoculum in aerobic, mineral salts medium at an initial test concentration of 10 mg Carbon/L was measured. The inoculum was activated sewage sludge (predominantly domestic). The percentage of theoretical CO2 values (or percentage of biodegradation) was 0% and 9.8% respectively after day 28. Therefore, the substance cannot be considered to be readily biodegradable under the strict conditions of OECD Guideline 301B.