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EC number: 260-135-8 | CAS number: 56375-79-2
In a 72 h toxicity study conducted according to OECD guideline 201, EC Method C.3 and GLP principles, freshwater algae (Pseudokirchneriella subcapitata) were exposed to the test substance at nominal concentrations of 12.5, 25.0, 50.0, 100 and 200 mg/L (3 replicates per concentration) and an untreated control (6 replicates), under static conditions. Measured concentrations in the test solution were at 107 - 119% relative to nominal at the start of the test and 109 - 117% at the end of the exposure. Therefore, effect parameters were based on nominal concentrations. The EC50 for growth rate inhibition (72h-ErC50) was 179 mg/L , the 72h-ErC10 was 45.2 mg/L. The study met all validity criteria, and is considered reliable without restriction.
ErC50: 179 mg/L
ErC10: 45.2 mg/L
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