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Short-term toxicity to aquatic invertebrates

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Description of key information

The 48-h EC50 value of AC-6000 in Daphnia magna is >0.144 mg/L; this value will be used in the assessment.

Key value for chemical safety assessment

Additional information

A GLP-compliant OECD 202 guideline study with Daphnia magna is available for AC-6000 (Kurume Laboratory, 2007b). Daphnids (20/dose) were exposed to a nominal concentration of 100 mg/L under semi-static conditions for 48 hours; the test concentration was analytically verified by GC-MS and was less then 80% of nominal concentrations. The test concentration was prepared by stirring the test solution with a target dose level of 100 mg/L for 48 hours before exposure. None of the daphnids were immobilised at the end of the exposure period. The EL50 value is >100 mg/L, the corresponding 48-h EC50 value >0.144 mg/L, this effect concentration is larger than the water solubility.