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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Administrative data

Link to relevant study record(s)

Description of key information

Acute toxicity study on acquatic invertebrates (Daphinia)

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Effect concentration:
16.3 mg/L

Additional information

To evaluate the acute toxicity of 1,4-CHDM DGE, to the freshwater cladoceran, Daphnia magna, over a 48-hour exposure period with 4 replicate vessels per test level, with 5 daphnids each, exposed to nominal concentrations of 0 (water control), 6.3, 13, 25, 50, and 100 mg 1,4-CHDM DGE/L. Test solutions were analytically verified at initiation and termination by HPLC/MS.

The final results were as follows:

The 24-hour EC50 = 42.1 mg/L (95% confidence limits not calculable);

The 48-hour EC50 = 16.3 mg/L ( 95% confidence limits 14.4 – 18.3 mg/L);

The 48-hour NOEC = 11.7 mg/L;