Document LpYra3jZeEJkmdGj56Z3rwEZw

Internal Correspondence BACK TO MAIN Commercial Chemicals Analytical Report #245 To: M. T. Pike - 236-2A From: L. D. Winter - 236-2B Subject: CS-2070/CS-2151 Partition Coefficient Date: August 3, 1981 Reference: Conroercial Chemical Analytical Request #16565 1) The method reference 1s Chiba, Tsunoda, Haraguchiad Fuwa ."Determination of Fluorine 1n 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. 2) Environmental laboratory protocol for the determination of the distribution coefficient of solid arid liquid substances in n-octanol/water. Introduction: A light yellow liquid labeled CS-2151 and a light yellow solid labeled CS-2070 were received from V. Pothapragada November 18, 1980. The CS-2070 was reported to be the dried solid from CS-*-2151 which 1s 25% solids 1n water. The samples were submitted for PMN* characterization. The CS-2070/2151 was partitioned between water and n-octanol to determine the distribution. ` Experimental: CS-2151 was diluted with water to give a concentration of CS-2070 of 10 jug/ml of distilled water. Equal aliquots of this sample and pre-water saturated n-octanol (99+% Aldrich) were shaken slowly for 8 hours, then allowed to stand for 24 hours. The phases were separated and analyzed for total organic fluorine by atomic absorption (1). Standard was made using CS-2070 1n water and 1n n-octanol to match matrix and recoveries. CS-2070 1s soluble In n-octanol. BACK TO MAIN M. T. Pike Commercial Chemicals Analytical Report #245 August 3, 1981 Page 2 ' Results Distribution Coefficient (D) g Concentration in n-octanol Concentration in Hater cc: J. D. LaZerte, R. J. Seffl, R. A. Prokop - 236 D. R. Pauly - 236-28 W. H. Pearl son - 223-6SE V. Pothapragada - 236-3A E. A. Reiner - 21-02 D. A. Ricker - 53-4N