Document zQ05MkdznydbxOpjnpD88EZQm

BACK TO MAIN OCTANOL/WATER DISTRIBUTION COEFFICIENT TEST SUBSTANCE______________________ Identity: Decafluoro(pentafluoroethyl)cyclohexanesulfonate, DEA salt; may be referred to as CS-2070. When dissolved in water may also be referred to or as CS-2151 or FC-90. (DEA salt of perfluoro(ethylcyclohexyl) sulfonate, [C2F5-CF(CF2CF2)2CFSO3-][H2N(CH2CH2OH)2+]) Remarks: The 3M production lot number was not noted. The test sample is CS-2151. It is described as containing 25% CS-2070 solids in water. The sample purity was not characterized. METHOD Method: 3M Environmental Laboratory protocol for the determination of the distribution coefficient of solid and liquid substances in noctanol/water and Chiba, Tsunoda, Haraguchiad Fuwa "Determination of Fluorine in Urine and Blood Serum by Aluminum Monofluoride Molecular Absorption Spectrometry and with a Fluoride Ion Selective Electrode" Analytical Chemistry, 1980, Volume 52, pages 1582-1585. GLP (Y/N): No Year (study performed): 1981 Analytical method: Total Organic Fluorine by Atomic Absorption Test temperature: Not noted. Diluent: Distilled water and 99+% pure n-octanol Test solution preparation: CS-2151 was diluted with water to give a concentration of CS-2070 of 10 ug/ml of distilled water. Equal aliquots of this CS-2070/water solution and n-octanol were shaken slowly for 8 hours and then allowed to stand for 24 hours. The phases were separated and analyzed for total organic fluorine. Standards were made by dissolving CS-2070 in water and in n-octanol to match matrix and recoveries. Remarks: CS-2070 was noted to be soluble in n-octanol. RESULTS Distribution Coefficient (D): Concentration in n-octanol Concentration in water = 0.65 BACK TO MAIN CONCLUSIONS Analysis for total organic fluorine in the n-octanol phase vs. the water phase indicate that the distribution coefficient for CS-2070 is 0.65 Submitter: 3M Company, Environmental Laboratory, P.O. Box 33331, St. Paul, Minnesota, 55133 DATA QUALITY________________________________________________ Reliability: Klimisch ranking = 4. Data and available details about the procedure were taken from a study summary. No raw data or records of the procedure followed were found. REFERENCES This study was conducted by the 3M Company, Commercial Chemicals Laboratory, Analytical Report #245, 1981. OTHER Last changed: 4/01/01