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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

A freshwater algal toxicity test with Selenastrum capricornutum exposed to 2-hydroxyethyl methacrylate and conducted under GLPs and following OECD TG 201 resulted in a 72-hour growth rate EC50 (ErC50) and NOEC of 836 and 400 mg/L, respectively.

Key value for chemical safety assessment

EC50 for freshwater algae:
836 mg/L
EC10 or NOEC for freshwater algae:
400 mg/L

Additional information

One freshwater algal study with selenastrum capricornutum was available for 2-hydroxyethyl methacrylate and considered reliable for assessment of this endpoint. The study was conducted with selenastrum capricornutum and found to be of good quality and assigned a Klimisch score of one. The study was conducted for 72-hours, under static conditions, following OECD Test Guideline 201, and under GLPs. The study concluded that the 72-hour growth rate EC50 (ErC50) and NOEC was 836 and 400 mg/L, respectively and considered the key parameters for this endpoint. The study also concluded that the 72-hour biomass EC50 (EbC50) and NOEC was 345 and 160 mg/L, respectively