Document gDnd61MR1ORw88krnEBBVEYGq

BACK TO MAIN WATER SOLUBILITY IN PURE WATER- SHAKE FLASK METHOD 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. Sample was recrystalized from a production lot of FC-95, and assigned a test, control, and reference number TCR 00017-046. Purity determined to be 97.9% by LC/MS, 1H-HMR, 19F-NMR and elemental analyses techniques. METHOD Method: Based on OECD 105, OPPTS 830.7840. GLP (Y/N): Yes Year completed: 2001 Water Source: ASTM Type I water, Millipore Remarks: The definitive test consisted of placing an excess amount of test substance with the appropriate water in centrifuge tubes. The tubes were vortexed and shaken at 225 rpm at 30C for 24, 48 and 72-hours followed by 24-hours of equilibration at 24 - 25C. Following equilibration, samples were centrifuged and the supernatant was analyzed by high performance liquid chromatography with mass spectrometric detection (LCMS). RESULTS__________________________________________________ ASTM Type I Water: 680 mg/L at 24 - 25C Description of solubility: Slightly soluble. The 24, 48, and 72-hour solubility concentrations were averaged to obtain the overall mean solubility concentrations. CONCLUSIONS______________________________________________ The overall mean solubility concentration of the test substance in pure water was 680 mg/L. Submitter: 3M Company, Environmental Laboratory, P.O. Box 33331, St. Paul, Minnesota, 55133 BACK TO MAIN DATA QUALITY______________________________________________ Reliability: Klimisch ranking 1. REFERENCES_______________________________________________ Studies conducted at the 3M Company, St Paul, MN, 2001, Environmental Laboratory Project Number EOO-1716. OTHER_____________________________________________________ Last changed: 6/26/01