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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

With high probability acutely not harmful to algae

Key value for chemical safety assessment

EC50 for freshwater algae:
500 mg/L

Additional information

In a non-GLP, 72-hour static test with the green alga Scenedesmus subspicatus (new name: Desmodesmus subspicatus) according to German Industrial Standard DIN 38412 part 9, the algae toxicity of 2-methylbut-3-yn-2-ol was investigated. Statistical evaluation of the endpoint growth rate revealed an EC50 (72h) > 500 mg/L, related to the nominal concentration.