Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Key value for chemical safety assessment

EC50 for microorganisms:
1 000 mg/L

Additional information

The inhibition of sewage microrganisms was assessed by measuring the turbidity (optical density at 530 nm) after 16 hours of incubation of the test substance at various concentrations and plotting the results against those of a control. The test concentration corresponding to 50 percent of the control is termed as 50 percent inhibition concentration (IC50). The IC50 for inhibition to the sewege organisms after 16 hours was determined to be >1000 mg/L. A supporting Microtox TM study using 4 concentrations of the test substance resulted in a 15 minute EC50 of 2000 mg/L. The result from the sewage microrganism inhibition study (key study) is believed to be more relevant for this endpoint and is being used as the key value for the safety assessment.