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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Ecotoxicological information

Toxicity to microorganisms

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Administrative data

Link to relevant study record(s)

Description of key information

The substance exhibits an EC50 of 178 mg/L and an EC10 of 30 mg/L for STP microorganisms.

Key value for chemical safety assessment

EC50 for microorganisms:
178 mg/L
EC10 or NOEC for microorganisms:
30 mg/L

Additional information

One reliable study is available for the registered substance. The toxicity to microorganisms was studied according to OECD TG No. 209 and GLP. The substance was tested at concentrations of 35.1, 70.2, 140.5, 281.0, 561.9, and 1123.8 mg/L (nominal) and the inoculum (microbial source) was activated sludge of a predominantly domestic sewage. The validity criteria were fulfilled. The EC50 for inhibition of respiration of activated sludge after 3 h contact time was 178 mg/L, the EC10 was 30 mg/L.