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Long-term toxicity to aquatic invertebrates

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Description of key information

No effects were observed up  to a loading rate of 100 mg/L. It can be concluded that cenospheres showes no chronic effects to aquatic invertebrates.

Key value for chemical safety assessment

Additional information

The long term effects of the test substance to aquatic invertebrates were evaluated in a 21d tests withDaphnia magnaaccording to the OECD 211, with "siliceous ash. " The test design was semi-static with a renewal of the test substance and growth medium. The tested ash was structural related to ash (residues), cenospheres and as cenospheres are a component of fly ash, these results can be used as read across. The test substance did not affect reproduction or survival of Daphnia magna at a WAF prepared at a loading rate of 100 mg/L after 21 days of exposure.