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EC number: 204-847-9
CAS number: 127-52-6
The 21 day EC10 is 0.26 mg/L (TWA) for the endpoint reproduction.
is selected for the chemical safety assessment, since it is the most
The analytical results
obtained during the study showed that the substance was instable within
3 days of exposure, under testing conditions, and depending on the test
time weighted averages were calculated based on HPLC measurements of
freshly prepared and solutions aged for maximum 3 days: 0.13, 0.26,
0.79, 1.73, 3.89 mg/L. These values correspond to 52%,
52%, 79%, 86.5% and 97.25% of the nominal concentrations. There is an
indication that the decomposition of the test substance is a function of
the temperature. Disappearance of the test substance was accelerated
during week 3 of exposure were the temperature was between 22 and 26°C
when compare to weeks 1 and 2, where the temperature was 20 ± 2°C. E.g.
aged solutions on day 7 and day 21 showed the following degradation
values (day 7 vs day 21: 7/21): 0/0
- 12/0 - 54/3 - 66/33
and 74.2/45.7 % of nominal concentrations 0.25, 0.5, 1, 2 and 4 mg/L. The
suitability of the analytical method was verified by using QC samples at
0.1 and 10 mg/L, which showed recoveries of 75.7% (0.1 mg/L) to 104.9%
(10 mg/L). Furthermore, recoveries
of freshly prepared solution at test start and each renewal were between
84.0% and 114.5%.
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