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EC number: 247-384-8
CAS number: 25973-55-1
EC50 72h > 10mg/LNOEC 72h >= 0.1mg/L
In a 72
hour toxicity screening study, the cultures of Scenedesmus subspicatus
were exposed to the test item at nominal concentrations of 0, 0.1, 1.0
and 10 mg/L under static conditions. The NOEC and EC50 values based on
cell number were < 0.1
and > 10 mg/L, respectively. However, there was no dose response
relationship observed. The derived NOEC is only based on cell number and
on statistical analysis.
A second study
on Pseudokirchneriella subcapitata was performed as a limit test. Algae
were exposed to control, vehicle control and test item at nominal
concentration of 0.1mg/L (0.016mg/L measured after removal of
undissolved test item) under semi-static conditions for 72 hours. The
ErC50 72h was >0.016mg/L and the NOErC was 0.016 mg/L which is above the
water solubility and no adverse effects were observed throughout the
can be concluded that the results indicate that the substance is not
acutely toxic to algae in the range of solubility.
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