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EC number: 290-714-0
CAS number: 90218-39-6
The objective of the 48-hour toxicity test was to evaluate the influence
of the test substance on the mobility respectively survival of Daphnia
magna. The nominal concentrations tested were 95, 171, 309, 556 and 1000
mg test substance /L and a control without any additions. Up to the
higest concentration tested of 1000 mg test substance/1 no toxic effect
on Daphnia magna was observed. Therefore, the NOEC (highest
concentration tested without toxic effect) of the test substance after
48 hours test duration is 1000 mg/1. Since according to the OECD
Guideline No. 202 concentrations exceeding 1000 mg test substance/1
should not be tested, the 48 h EC 50 could not be specified.In the
analysed test media the measured concentrations of the test substance
only amounted to 29.2 - 41.7 % of the nominal values. These low recovery
rates were probably due to a precipitation of the test substance, which
was observed in test media of all test concentrations during test
duration and also in the samples taken for the analytical measurements.
Since in the stock solution a concentration was measured corresponding
to 102.4 % of the nominal value, the reported results are related to the
nominal concentrations of the test substance.
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