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EC number: 247-384-8
CAS number: 25973-55-1
EC50 48h Daphnia > 10mg/L
In a 24h
Daphnia toxicity test the toxicity of the test item was studied
under static conditions. Daphnids were exposed to control, vehicle
control, and test item at nominal concentration of 5.8, 10, 18, 32, 58
and 100 mg/L for 24 hr. Immobilization was observed daily. The EC50 24h
was > 100 mg/L. The 24–hr EC0 based on immobilization was 58 mg/L.
However, small parts of the test substance were swimming at the surface
of the test solutions at concentrations 5.8-100 mg/l (nominal) from the
start of the test. Any observed toxicity could relate to these
In a second
study with Daphnia magna. Daphnids were exposed to control, vehicle
control and test item at nominal concentration of 0.1mg/L (0.083mg/L
measured after removal of undissolved test item) under semi-static
conditions for 48 hours. The EC50 48h was >0.083mg/L which is above the
water solubility and no adverse effects were observed throughout the
published data on acute Daphnia toxicity are available. Vehicle was
used. Limited details on the experimental conditions were given.
However, the EC50 48h was above the highest tested concentration of
can be concluded that the test substance is not acutely toxic to Daphnia
at the range of solubility.
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