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EC number: 237-864-5
CAS number: 14025-15-1
Two reliable 21 d chronic toxicity studies for daphnids are available, both with results in the same order of magnitude. Key value is the value used in the EU RAR 2004 from BASF as representative for the group of EDTA salts. This 21d NOEC = 25 mg/L for the test substance (ethylenediaminetetraacetic acid, disodium salt). Recalculation towards EDTA-CuNa2 via MW ratio results in 397.3/336.21 x 25 = 29.5 mg/L
Two long term studies were considered, from
which the study with EDTA-Na2H2 was determined to be key. This is the
same study from the EU RAR (2004), the other study with EDTA-MnNa2
showing a higher EC10 value confirms the toxicity to daphnids. To expres
the endpoint as EDTA-CuNa2 a recalculation was performed.
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