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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Administrative data

Link to relevant study record(s)

Description of key information

Key value for chemical safety assessment

EC50 for freshwater algae:
6.22 mg/L

Additional information

In a study (1992, GLP), according toDirective 87/302/EEC, algal inhibition test, a EbC50 (72 h) = 47 mg/L was reported. But according to REACH guidance R.7b, direct use of the biomass concentration without logarithmic transformation cannot be applied to an analysis of results from a system in exponential growth. So a new study by QSAR was conducted to predict the ErC50, for which QMRF, QPRF were both reported.