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EC number: 425-220-8 | CAS number: 5945-33-5
In the pre-test, The test concentrations were selected for concentration analysis during pretest. For the nominal concentration of 1 mg/L, both the measured concentration at 0 h and 24 h were 42 % of the nominal concentration, which indicated that the test substance was not fully dissolved in the test medium. From the analytical result, the test substance was not fully dissolved in the test medium at the concentration of 1 mg/L. Therefore, the data at the concentration of 1 mg/L was not used for toxicity assessment. Based on the results of the pre-test, test concentrations of 0.20 and 0.40 mg/L were selected for definitive test.
Reproduction Test (21 days, Semi-Static System) of BDP to Daphnia magna Straus was conducted in accordance with OECD test guideline 211, under semi-static conditions with two test concentrations of 0.20 and 0.40 mg/L.Ten test daphnids were exposed to each test concentration and controls for a period of 21 days. For each concentration and the control, 10 replicates were performed. Each replicate contained only one daphnid. The daphnids were observed for reproduction and growth during the exposure. The measured concentration of test substance was in the range of 83 % to102 % of nominal values in the fresh (0 hour) and old test solution (48 hours). Th erefore, all effect values were given based on the nominal concentration. The calculations and values were based on 0.20 and 0.40 mg/L nominal concentrations. From the test, the results show that on the basis of the nominal concentrations, the NOEC of BDP to Daphnia magna is not less than0.40 mg/L, and which means the NOEC was not less the water solubility determined for BDP.
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