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Long-term toxicity to aquatic invertebrates

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Description of key information

The NOEC (21d) for 2-phenoxyethanol in a reproduction test with Daphnia magna was determined to be 9.43 mg/L (measured concentration) for reproduction and 49.2 mg/L (measured concentration) for weight and length. The LOEC (21d) regarding reproduction was 22.5 mg/L (measured concentration), the LOEC (21d) regarding weight and length was 110 mg/L (measured concentration). 

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Effect concentration:
9.43 mg/L

Additional information

The chronic toxicity of 2-phenoxyethanol on the reproduction of the water flea Daphnia magna STRAUS was determined in a semi- static test according to OECD guideline 211 and U.S. EPA guideline OPPTS 850.1300 (BASF AG, 2006). Daphnids were exposed to nominal concentrations (0, 10, 23, 50, 110 and 220 mg/L) of 2-phenoxyethanol (purity > 99.9% peak-area%) for 21 days, and reproduction (young animals), swimming ability, length and weight of the parent animals were measured.
In conclusion, the 21 day NOEC values for 2-phenoxyethanol in the reproduction test were (nominal and measured concentrations) 10 mg/L for reproduction (9.43 mg/L measured), 50 mg/L for weight and for length (49.2 mg/L measured). The LOEC values were 23 mg/L for reproduction (22.5 mg/L measured) and 110 mg/L for weight and length (nominal and measured), the LC0values for swimming ability of
the adult animals were ≥ 220 mg/L (≥ 221 mg/L measured).