Document OzbDoGKg4xkg10jYNVjE7J7bQ

Dolores H. Vente, St. Louis N3A April 28, 1981 2;4-DICHLOROPHENOL TRANSBAS, INC. REW/DKW, 4/23/81 R. E. Walters B2SF P. J. A m a l i E. Layton J.R.G.Ortiz R. C. Richardson J. D. Wilson B3NJ 1740 E2ND B2SG N3A Here are the typicals and the ranges for all components of 0.1X and larger In 2,4-DCP that yon requested. 2,4-Dichlorophenol 93.8Z 1.0Z 2,6-Dlchlorophenol 2.6Z 0.9Z p-Chlprophenol 0.6Z 0.9Z 2,4,6-Trlchlorophenol 2.it t 1.2Z Phenol 0.1Z 0.2Z 0 -Chiorophenol 0.7Z f 0.6S Attached Is Analytical Method 13,086 vhlch outlines the Gas Liquid Chromatographic procedure for determination of assay of chlorophenols. J, D. Wilson furnished this statement on "dioxin" content. A retro spective analysis of 15 lots of 2,4-Dlchlorophenol produced between Kay and November 1980 shoved no detectable amount of tetrachlorodlbeneodloxln In any of the samples. The analytical method used vas capable of detecting 1 ng of 2,3,7,8-Tetrachlorodibenrodioxin per g of 2,4-Dlchlorophenol (1 ppb, or 0.001 ppm). The method Included extraction with petroleum ether of a solution of DCP in 1 N KOH, followed by fractionation on a basic alumina column and analysis by GC/MS. Recoveries of spiked 2,3,7,8-TCDD vre in the range of 78-1032 in this series of experiments. If you need further Information, let ms know. . 002888 Attachment ^BSSRBSRrSf i.t exhibitm? 1M Dolores M. Wente c s'u'E"JEC T TO rP,r-rOtOTTPUf.-Ti.VvE O R E e-