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EC number: 225-306-3 | CAS number: 4767-03-7
Analytical results are presented below:
Nominal Bis-MPA concentration (mg/L)
Measured concentrations (mg/L)(each value is a mean of two determinations)
% of nominal
The immobility results are presented below:
Number of immobilised Daphnia(20 Daphnia per concentration)
Neutralised test media
The water quality values are presented below:
Dissolved oxygen (mg/L)
The 48 hour acute toxicity of Bis-MPA to Daphnia magna was carried out in a static system according to OECD 202 and EU guidelines. Four replicate vessels, each containing 5 daphnids were exposed to nominal concentrations of 0 (control), 12.5, 25, 50 and 100 mg/L over a 48 hour exposure period. The measured pH in the freshly prepared 50 and 100 mg/L test media were 7.3 and 5.8, therefore additional test vessels were prepared where the pH was neutralised. Measured concentrations demonstrated that test media were adequately prepared and maintained during the exposure period, the results of the study were therefore based on nominal exposure concentrations. pH had no effect on Daphnia mobility during the study. The 48-hour EC50 was determined to be >100 mg/L (the highest nominal concentration tested)
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