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 when introduced in appropriate low concentrations.

Key value for chemical safety assessment

Additional information

Two guideline studies according to OECD 209 are available for the assessment of the toxicity to microorganisms. In a study provided by Clariant (1989) an IC50 value > 100 mg/L was determined while in a study by Kemira (1989) an EC50 > 10000 mg/L was observed. These values are supported by two studies according to OECD 209 using "Analogue substance 1" as test substance. These results are considered to be adaptable for the test substance as well due to their structural similarities. In both studies the EC50 values were determined to exceed 2000 mg/L (Clariant 984/b-01, 2002 and 2791c-07, 2007). Based on these data, the inhibition of the degradation activity of activated sludge is not anticipated when introduced in appropriate low concentrations.

Categories Display