Registration Dossier
Registration Dossier
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EC number: 246-922-9 | CAS number: 25378-22-7
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
Based on read across the 48 hour EC50 lies between loading rates of 0.18-0.32 mg/l WAF.
Key value for chemical safety assessment
Additional information
The toxicity of dodec-1-ene toDaphnia magnawas investigated in an OECD 202 test (Brixham Environmental Laboratories, 2010b). Due to the low solubility of the test substance the study used a solvent carrier. The test substance was mixed with the solvent before being added to the dilution water. It was then stirred for 48 hours under sealed conditions to maximise the exposure concentrations. The test was carried out with sealed test vessels and the solutions were renewed daily to minimise the loss of the test substance.
At the lower loading rates (0.032 - 0.18 mg/l) the measured concentrations were below the limit of detection (0.01 mg/l) throughout the test. No effects were seen at these loading rates. A 55% effect was observed at 0.32 mg/l, the next highest loading rate. Exposure concentrations at this loading rate were detectable throughout the exposure period except during the final 24 hour period when concentrations fell from 0.058 to <0.01 mg/l following the final exchange. The EC50 therefore lies between loading rates of 0.18 and 0.32mg/l and the analytical monitoring indicates that the mean exposure concentration at these loading rates was <0.063mg/l.
These data for dodec-1-ene are read across to dodecene.
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