ASSESSMENT OF ENVIRONMENTAL EFFECTS The following ecotoxicity studies have been supplied by the notifier. The were carried out according to OECD Test Methods. Test Species Results (Nominal)# References NOEC* = 100 Economic Zebra fish Acute Toxicity (Branchydanio mg/L Cooperation and Static Through Development, rerio) 96 hour 1992b) OECD TG 203 Böttcher, 1997 (Organisation for LC50 > 100 mg/L Economic Flea (Daphnia NOEC* 100 Acute Immobilisation Cooperation and magna) mg/L Static Development, 48 hour OECD TG 202 EC50 > 100 mg/L Maetzler, 1997 (Organisation for and Development, 1984b) 109.1 mg/L (79-168 EµC50 = 118.9 Growth Inhibition mg/L) EbC50 = 29.6 mg/L (73.2-260.9 Static mg/L (22.8-39.7 mg/L) EbC50 = 28.1 72 hour Algae mg/L) mg/L (22.1-36.7 OECD TG 201† (Scenedesmus subspicatus) mg/L) NOEC* = 3.2 mg/L biomass b growth rate µ (Organisation for Experiment B Experiment A EµC50 = Hertl, 1997 Economic Cooperation Economic Aerobic Water Bacteria Respiration Inhibition Cooperation and 30 minute Development, OECD TG 209 EC50 > 1000 mg/L Schnalke, (Organisation for # 95 % confidence limits in brackets. The method of this test was modified to differentiate between a reduced growth of algae due to real toxic effects of the † notified chemical on the algal cells (Experiment A) or due to an indirect effect, a reduced algal growth by light absorption in coloured test solutions (Experiment B). * NOEC - no observable effect concentration
ASSESSMENT OF ENVIRONMENTAL EFFECTS The following ecotoxicity studies have been supplied by the notifier. The were carried out according to OECD Test Methods. Test Species Results (Nominal)# References Acute Toxicity Static Through 96 hour OECD TG 203 (Organisation for Economic Cooperation and Development, 1992b) Zebra fish (Branchydanio rerio) LC50 > 100 mg/L NOEC* = 100 mg/L Böttcher, 1997 Acute Immobilisation Static 48 hour OECD TG 202 (Organisation for Economic Cooperation and Development, Flea (Daphnia magna) EC50 > 100 mg/L NOEC* 100 mg/L Maetzler, 1997 Growth Inhibition Static 72 hour OECD TG 201† biomass b growth rate µ (Organisation for Economic Cooperation and Development, 1984b) Algae (Scenedesmus subspicatus) Experiment A EµC50 = 109.1 mg/L (79-168 mg/L) EbC50 = 29.6 mg/L (22.8-39.7 mg/L) NOEC* = 3.2 mg/L Experiment B EµC50 = 118.9 mg/L (73.2-260.9 mg/L) EbC50 = 28.1 mg/L (22.1-36.7 mg/L) Hertl, 1997 Respiration Inhibition 30 minute OECD TG 209 (Organisation for Economic Cooperation and Development, Aerobic Water Bacteria EC50 > 1000 mg/L Schnalke, # 95 % confidence limits in brackets. † The method of this test was modified to differentiate between a reduced growth of algae due to real toxic effects of the notified chemical on the algal cells (Experiment A) or due to an indirect effect, a reduced algal growth by light absorption in coloured test solutions (Experiment B). * NOEC - no observable effect concentration
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