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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

ErC50 (72h) = 45 mg/L and NOErC = 14 mg/L  for Scenedesmus subspicatus (according to EU Directive 92/69/EWG)

Key value for chemical safety assessment

EC50 for freshwater algae:
45 mg/L
EC10 or NOEC for freshwater algae:
14 mg/L

Additional information

The toxicity of 4 -tert-butylcyclohexanol to algae was investigated in a study on Scenedesmus subspicatus (94 -0230 -DGO). The dose-response study was conducted according the EU Directive 92/69/EWG under GLP conditions. The analytical verification of the test substance concentrations (carbon determination) were included. The test resulted in an ErC50 (72 h) of 45 mg/L (measured, geometric mean) and NOErC of 14 mg/L (measured, geometric mean).