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EC number: 304-037-6 | CAS number: 94233-07-5
Reliable 48 h EC50 values for invertebrates have been derived from related EDTA complexes, from which one (Borrmann, 2007) is based on measured data. This study is therefore selected as key study. As the concentration is expressed as EDTA-FeNa a recalculation to EDTA-Mn(NH4)2 would result in 390.23/367.1 x 100.9 = 107 mg/L
Although multiple studies are available for daphnids (see read across document in section 13), only two 48h studies are available, the other studies report either 24h or 96h results.
For this endpoint the 48h values are most relevant and these values are in the same order of magnitude (101 -140 mg/L). As expected 24h EC50 values are somewhat higher, 96h EC50's show to be lower.
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