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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

The EC50 (48 h) for Daphnia magna is 2.4 mg AO/L. C12-18 AO and C12-14 AO exhibit similar acute toxicity to Daphnia.

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Effect concentration:
2.4 mg/L

Additional information

Two reliable studies are available for C12-18 AO. In the key study, performed according to OECD TG 202 under GLP [Noack M (2001)] Daphnia magna were exposed to C12-18 AO under static conditions for 48 hours at nominal concentrations of 0.75, 1.5, 3, 6, 12 and 24 mg AO/L. The EC50 (48 h) was 2.4 mg AO/L. In the supporting study also performed to OECD TG 202 under static conditions using Daphnia magna, the EC50 (48 h) was 4.5 mg AO/L.

Three reliable studies performed using Daphnia magna are available for C12-14 AO. All three studies were performed to OECD TG 202 under static conditions. The EC50 (48h) values (nominal) obtained were 3.1 mg AO/L [Noack M (2001)], 2.9 mg AO/L [Mark U & Meuwsen IJB (1990)] and 4.2 mg AO/L [Beneventi S (2005)].

Overall, it can be concluded that the C12-18 AO and C12-14 AO exhibit similar acute toxicity to Daphnia magna.