Registration Dossier

Diss Factsheets

Ecotoxicological information

Toxicity to microorganisms

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

The inhibition of the degradation activity of activated sludge is not anticipated.

Key value for chemical safety assessment

EC10 or NOEC for microorganisms:
1 000 mg/L

Additional information

For TEA, concerning the acute toxicity to microorganisms a test performed by Klecka et al. (1985) according to OECD TG 209 was identified as key study. Using activated, predominantly municipal sludge as inoculum in a static procedure an EC50 of > 1000 mg/l after 180 minutes of exposure was calculated.

For DEA, there is one Non-GLP OECD 209 guideline study available (1992). In this short-term respiration test with domestic activated sludge the determined EC10was >1000 mg/L (referred to nominal concentration).