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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

The toxicity of p-cresol to the algae Desmodesmus subspicatus (former name Scenedesmus subspicatus) was determined according to DIN 38412 part 9 yielding an 48 h-EC50 of 21 mg/l and an EC10 of 4.6 mg/l (both related to growth rate) were determined.

Key value for chemical safety assessment

EC50 for freshwater algae:
21 mg/L
EC10 or NOEC for freshwater algae:
4.6 mg/L

Additional information

The effects of p-cresol on the the green alga Scenedemus subspicatus was tested by a cell multiplication inhibition test. The experiment wass carried out according to a national standard procedure, DIN 38412, part 9. Based on nominal cincentrations a 48h-EC50 of 21 mg/l and an EC10 of 4.6 mg/l (both related to growth rate) were determined.