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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

The acute toxicity of m-cresol to Daphnia pulicaria was determined in a flow-through immobilisation test after an exposure period of 48 h. Based on measured concentrations a 48h-EC50 > 99.5 mg/l was determined.

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
99.5 mg/L

Additional information

Short term toxicity of m-cresol towards various species of aquatic invertebrates was assessed in several experiments.

The acute toxicity of m-cresol to Daphnia pulicaria was determined in an experiment under fow-through conditions. After an exposure period of 24 h the LC50 was reported to be > 99.5 mg/l. The result relates to measured concentration as analytical control was performed.

Another aquatic invertebrate was tested for toxicity. Freshly fertilized eggs of the marine sea urchin Strongylocentrotus droebachiensis were exposed to m-cresol in a static test. The EC50 (96 h) was 30 mg/L.

For risk assessment purposes, only the most reliable study is considered. The study conducted with Daphnia pulicaria was chosen for assessment, as it is the preferred species and the experiments was carried out according to a guideline study, following the state-of-the-art.