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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

Daphnia magna:  EC0>500mg/l.  EC50=2210mg/l

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
2 210 mg/L

Additional information

In a guideline acute invertebrate toxicity study, daphnia magna were exposed to 500mg/l of 2-(2-(2-butoxyethoxy)ethoxy)ethanol for 48 hours. No evidence of immobility was seen up to the maximum concentration tested. In a 48hr toxicity study in daphnia magna (DM), the substance 2 -(2 -(2 -butoxyethoxy)ethoxy)ethanol was established to have an LC50 value of 2210mg/l. Neither study is ideal for use as a sole key study and a weight of evidence approach is used to fulfil the requirements for this end point. The study that derives a true EC50 rather than the limit study is used to derive thekey parameter.