Registration Dossier

Ecotoxicological information

Toxicity to microorganisms

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

The performance of a study on the toxicity to microorganisms (respiration inhibition of activated sludge) is not regarded as necessary.

Key value for chemical safety assessment

Additional information

According to REACH Regulation (Annex VIII, 9.1.4, column 2) the study on respiration inhibition of activated sludge does not need to be done if the substance is readily biodegradable. Diethyl carbonate proved to be readily biodegradable and fulfilling the 10-d-window criterion (>81% biodegradation after 28 d). In the toxicity control of the ready biodegradability test containing both test and reference item (100 mg/L each), 72% biodegradation occurred within 14 d, thus indicating that the test item was not inhibitory to the inoculum at the concentration tested. Based on these results, the study on respiration inhibition of activated sludge is not regarded as necessary.