Document 5k8nXEGDy57jBYw5p285eVkEN

Physical Chemistry Method 73-19 Job No. 1016022 CAS CHROMATOGRAPHIC DETERMINATION OF CHLORINATED BIPHENYL ISOMERS IN ARQCIOH PRODUCTS PURPOSE OF ANALYSIS Improved method for determining the chlorinated biphenyl isomer dis tribution in fractions from Aroclor distillation studies. CHROMATOGRAPHIC CONDITIONS Instrument: Varian Aerograph Series 1200 Type Detector: Flame Ionization Column: 100'X 0.02* I.D. Poly 1-110 Support Coated Open Tubular (SCOT) Column Temper*ture: 220*C Detector Block Temperature: 300*C Injection Port Temperature: 300*C Sample Volume Injected: 0.001 ml Split 30/1 Plow Rates Helium: 6 ml/ain. Auxiliary Gas: 35 ml/min. Hydrogen: 40 ml/min. Air: 350 ml/min. RETENTION TIMES (UNCORRECTED) OF COMPONENTS SEPARATED (CHROMATOGRAM ATTACHED) Component Ho. 1 2 3 4 5 6 7 8 9 '* 10 11 12 13 14 15 16 17 18 19 20 21 Identity Biphenyl o-Chlorobiphenyl 7,2'-Dichlorobiphenyl m-Chlorobiphenyl p-Chlorobiphenyl 7,5-Diehlorobiphenyl 2,4- and 2,6-Dichlorobiphenyl 2,3 '-Dichlvobi phenyl 2#2 -Dichlorobiphenyl' 2,4*-Dichlorobiphenyl 2*5#2'-Trichlorobiphenyl tMuMArn Trichlorobiphenyl Unknown Trichlorobiphenyl 2,3,2*-Trichlorobiphenyl Unknown Trichlorobiphenyl 3,3*-Dichlorobiphenyl 3,4-Dichlorobiphenyl 3,4'-Dichlorobiphenyl Unknown Tetrachlorobiphenyl 4,4'-Dichlorobiphenyl Unknown Trichlorobiphenyl Retention Time (Minutes) 6.2 7.0 8.5 8.9 9.2 10.0 10.2 10.5 10.8 11.1 12.4 12.8 13.1 13.6 14.0 14.6 15.1 15.4 15.7 16.2 16.5 HONS 021716 Method 73-19 Page No. 2 Component No. 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 Identity Unknown Trichlorobipheny1 2,5,4'-Trichlorobiphenyl 2,4,4'-Trichlorobiphenyl 3,4,2'-Trichlorobiphenyl 2,5,2',5'-Tetrachlorobiphenyl 2,3,4-Trichlorobiphonyl Unknown Tetrachlorobiphenyl Unknown Tetrachlorobiphenyl unknown Tetrachlorobiphenyl Unknown Tetrachlorobiphenyl Unknown Tetrachlorobiphenyl Unknown Tetrachlorobiphenyl Unknown Tetrachlorobiphenyl Unknown Pentachlorobipheny1 Unknown Pentachlorobiphenyl Unknown Tetrachlorobiphenyl Unknown Pentachlorobiphenyl Unknown Tetrachlorobiphenyl 3,4,4'-Trichlorobiphenyl Unknown Tetrachlorobiphenyl Unknown Tetrachlorobiphenyl Unknown Tetrachlorobiphenyl 2,4,5,2',5'-Pentachlorobiphenyl Unknown Pentachlorobiphenyl Unknown Tetrachlorobiphenyl Unknown Tetrachlorobiphenyl Unknown Pentachlorobiphenyl Unknown Pentachlorobiphenyl Unknown Pentachlorobiphenyl Unknown Pentachlorobiphenyl Unknown Pentachlorobiphenyl Retention Time (Minutes) 16.5 16.8 18.2 18,5 19.4 19,7 20.1 21.0 21.6 22.0 22.5 23.3 24.2 25.8 27.5 27.7 28.5 28.8 29.8 30.8 31.2 32.2 32.8 34.1 34.7 35.5 36.2 37.3 38.9 39.5 41.0 CALCULATION TECHNIQUE Normalization With Area Correction Factors. PRECISION No determination of precision was made. The variability of a single GC analysis at the 95% confidence limits is usually 0.5 to It relative. db Monsanto Industrial Chemicals Co. Applied Sciences St. Louis, Mo. 7/74 - G. M. Gasser, E. M. Emery HONS 021719 HONS 021720