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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 inhibitory effect of the test item on the respiration rate of aerobic wastewater microorganisms of activated sludge was investigated in a 3-hour respiration inhibition test according to OECO Guideline for Testing of Chemicals, No. 209.The following nominal concentrations were tested: 10, 32, 100, 320, and 1000 mg/l. 
Up to and including the concentration of nominal 100 mg/L l the test item had no significant («15%) inhibitory effect on the respiration rate of activated sludge after the incubation period of three hours. At the higher test item concentrations of nominal 320 and 1000 mg/L the inhibitory effect increased to 24% and to 45%, respectively.

Key value for chemical safety assessment

EC50 for microorganisms:
1 250 mg/L
EC10 or NOEC for microorganisms:
148 mg/L

Additional information