Document 154zbdw15bKaQeM103k6bkBa

BACK TO MAIN TOXICITY TO AQUATIC INVERTABRATES (Daphnia magna) TEST SUBSTANCE Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or FC-95. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks: The test substance is a white powder of uncharacterized purity. The following summary is abbreviated due to the fact that this study has been superceded by a more recent test. METHOD Method: International Standards Organiza tion (1982) Type: Acute static GLP: No Year completed: 1985 Species: Daphnia magna RESULTS Nominal concentrations: 10, 20, 30, 50, 100 mg/L Number of replicates: 2 Element values (95% confidence interval) calculated per replicate 48-hour EC50 = 58 (46 - 72) mg/L 48-hour EC50 = 67 (48 - 92) mg/L DATA QUALITY Reliability: Klimisch ranking = 2. This study satisfied all criteria for quality testing at the time performed, but actual concentrations were not measured. Results were based on nominal concentrations. Additionally, sample purity was not adequately characterized. REFERENCES This study was conducted by Beak Consultants Limited, Mississauga, Ontario, Canada for Panarctic Oils Ltd, Calgary, Alberta, Canada. OTHER Submitter: 3M Company, Environmental Laboratory, P.O. Box 33331, St. Paul, Minnesota, 55133 Last changed: 5/26/01