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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

2-phenoxyethanol showed an LC50 (48h) of 488 mg/L for Daphnia magna.

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
488 mg/L

Additional information

The acute toxicity of 2-phenoxyethanol (purity 99.5%, pooled sample) to the waterflea Daphnia magna STRAUS was determined according to the EC guideline 79/831 EEC, Annex V, Part C (BASF AG, 1989). The test was performed under static conditions for 48 hours, testing the immobility of daphnids at nominal concentrations of 0, 31.25, 62.5, 125, 250, 500 mg a.i./L. No immobility was observed for any of the tested concentrations. The EC50 after 48 hours was > 500 mg/L.

Two supporting studies studying the mortality and mobility of Daphnia magna in freshwater static systems found LC50 (48h) values of 460 and 480 mg/L.

In another supporting study, the acute toxicity of 2-phenoxyethanol to the marine species Chaetogammarus marinus was determined in a saltwater static system. As a result, the LC50 after 48 hours was determined to be 941 mg/L (nominal) and after 96 hours 357 mg/L (nominal).