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EC number: 421-640-0
CAS number: -
Determination of short-term toxicity of
Polyperin Y against Daphnia magna STRAUS according to OECD 202 resp. EU
One valid experiment was performed. The
study was performed using 5 concentrations ranging from 4.6 to 100 mg/L
(nominal). For each test concentration and the blank control, 20 Daphnia
were exposed to the test item for 48 hours in a static test system.
After 24 and 48 hours, the immobilised Daphnia were counted. None of the
animals was immobilised in the blank control and the concentrations.
Potassium dichromate K2Cr2O7 (CAS 7778-50-9)
was used as positive control in a current reference study to assure that
the test conditions are reliable.
At the start and at the end of the test, the
content of the test item in the test solutions was estimated by
determination of the dissolved organic carbon (DOC) content in the test
solutions using a carbon analyser.
Because of the very low solubility of the
test item the measured concentrations at the start and the end of the
test lay in the range of the blank control. Therefore, the nominal
concentrations were used for the evaluation of the biological results.
At the acute toxicity test against
Desmodesmus subspicatus, significant inhibition of algal growth was
observed at the highest tested concentration 100 mg/L. Therefore, the
test item must have been present in the test solution, but wasn´t
measurable. The dilution water, which was used in this study, is
comparable to the algal medium, which was used in the acute toxicity
test against Desmodesmus subspicatus. Therefore, it can be assumed that
test item was present in the test solutions in this study, but the test
system was not sensitive enough to show toxicity. The following results
were determined for the test item Polyperin Y (species: Daphnia magna):
48h-NOEC ≥ 100 mg/L
48h-LOEC > 100 mg/L
48h-EC50 > 100 mg/L
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