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EC number: 947-663-0 | CAS number: -
In the following table, the summary of the reproduction is given.
SD = standard deviation
RSD = relative standard deviation = coefficient of variation
M = mortality of parent animal
In the following table, the total living offspring per treatment and the corresponding living offspring per surviving parent animal and the inhibition in comparison with the control is stated:
Concentration in mg/L
Surviving Parent Animals
Mean Offspring per Surviving Parent Animal
Inhibition of Reproduction in %
Negative inhibition values indicate a stimulation of fecundity compared to the control.
One valid experiment was performed.
10 Daphnia were exposed to the test item for each treatment and blank control for 21 days in a semi-static test system.
The study was performed using five concentrations ranging from 1.0 to 22 mg/L. The water-accommodated fraction (WAF) was prepared for the test.
The offspring of the animals was counted each working day. Reproduction of the daphnia in the highest treatment was higher than in the blank control.
The content of the test item in the test solutions was determined using GC-MS determination. The analysis of the test item concentrations in the treatments showed a low correlation with the nominal concentrations because of the limited solubility in test medium. Therefore, the determination of the results was based on the geometric mean of the measured concentrations.
According to the OECD guideline, the offspring of dead animals must be taken into account if the death is caused by toxicity of the test item. Only inadvertent and/or accidental parental mortality should be excluded from evaluation. Because no toxicity could be observed, the offspring of deceased parent animals was excluded from the calculation of total offspring per treatment.
The following results were determined for the test item DIACID 1550:
> 4.83 mg/L
NOEC 21 d Daphnia magna (OECD 211): >5.3 mg/L
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