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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

The 72 hour EL50 is >1000 mg/l WAF

Key value for chemical safety assessment

Additional information

Pateman (1998) tested the toxicity of alkenes, C20 - 24 to Pseudokirchneriella subcapitata in an OECD 201 test. Due to the low solubility of the test substance test organisms were exposed to water accommodated fractions (WAF) and exposure concentrations were expressed as a loading rate. The test was conducted as a limit test with a single exposure concentration of 1000 mg/l WAF. No effects were observed at this loading rate, so the 72 hour EL50 is >1000 mg/l WAF and the NOELR is 1000 mg/l WAF.

Vryenhoef and Mullee (2008) tested the toxicity of alkenes, C20 - 24 to Desmodesmus subspicatus in an OECD 201 test. Due to the low solubility of the test substance test organisms were exposed to water accommodated fractions (WAF) and exposure concentrations were expressed as a loading rate. The test was conducted as a limit test with a single exposure concentration of 100 mg/l WAF. No effects were observed at this loading rate, so the 72 hour EL50 is >100 mg/l WAF and the NOELR is 100 mg/l WAF.