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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 Pseudokirchnerella subcapitata exposed to methacrylic acid, monoester with propane-1,2-diol and conducted under GLPs and following OECD Test Guideline 201 resulted in both a 72-hour growth rate EC50 (ErC50) and NOEC of >97.2, the highest measured concentration tested.

Key value for chemical safety assessment

EC50 for freshwater algae:
97.2 mg/L
EC10 or NOEC for freshwater algae:
97.2 mg/L

Additional information

One freshwater algal study was available for methacrylic acid, monoester with propane-1,2-diol and considered reliable for assessment of this endpoint. The study was conducted with Pseudokirchnerella subcapitata 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 were both >97.2 mg/L, the highest measured concentration tested.