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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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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.