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EC number: 700-957-0
CAS number: 1141852-17-6
NOEC (3 h) ≥ 1389 mg/L for activated sludge mircoorganisms (OECD 209, limit test)
One study investigated the toxicity of the test substance Y-15866
to activated sludge microorganisms (Eisner, 2010). The study was
performed according to OECD 209, with activated sludge from wastewater
treatment plant treating predominately domestic wastewater. The
respiration rate of activated sludge was investigated after an
incubation period of 3 h at the loading rate of 1389 mg/L corresponding
to 1000 mg/L corrected for the impurities of the test item. No signs of
inhibition of respiration occurred. Therefore, this study resulted in an
EC50 (3 h) of > 1389 mg/L and a NOEC (3 h) of ≥ 1389 mg/L. An inhibition
of the degradation process in sewage treatment plants is not
anticipated. As the substance is hydrolytically unstable this study also
reflects the possible effects of the hydrolysis products.
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