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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

With high probability acutely toxic to aquatic plants.

Key value for chemical safety assessment

EC50 for freshwater algae:
19 mg/L
EC10 or NOEC for freshwater algae:
1.7 mg/L

Additional information

In a 72-hour static GLP test with the green alga Desmodesmus subspicatus according to OECD TG 201, the algae toxicity of 2 -mercaptoethanol was investigated. Statistical evaluation of the endpoint growth rate revealed an EC50 (72h) of 19 mg/l and a NOEC of 1.7 mg/l.