138 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS Society of Cosmetic Chemists Award Sponsored by Shaw Mudge & Co. The 1969 Society of Cosmetic Chemists Award sponsored by Shaw Mudge & Co. has been presented to the late Dr. John H. Beckley, Dr. Lionel F. Rubin of the University of Pennsylvania School of Veterinary Medicine, and Dr. Thomas J. Russell, Jr., of Bio/dynamics Inc. for their paper "The Use of the Rhesus Monkey for Predicting Human Response to Eye Irritants," published in Toxicology and Applied Pharmacology, 15 (1969). Formal presentation of the award was made by the Society's President Mr. Charles Fox of the Warner Lambert Research Institute at the December 1st luncheon session during the Society's annual meeting at the Americana Hotel (New York City). The award, consisting of a scroll and a $1000 honorarium, is presented annually to the author or au- thors of the paper judged to be the most outstanding contribution to safety or safety testing in the use of toiletry and cosmetic products. . :, . .:• - ½ ".?½ .• -,. ,-•. •.' . .., • • • ß ½: • , ' . -..• .. • . . • :½ ..j-_ .. 5 ...- . . &• .. . : •,,•d ...... , . . ½• ................. :s: .......... . •. -.•-: . • ..•,-..-•C, '•:.• ½ ::: ...... . .......... ..... .. ::.2 2:' • ½•:"' 4¾' Le[t to right: Dr. Thomas J. Russell, Jr., Dr. gioncl F. Rubin, Mrs. John H. Beckley, and •e Society's President Mr. Charles Fox

[. Soc. Cosmet. Chem., 22, 139-151 (Feb. 4, 1971) The Purification of Some Intermediates for Permanent Hair Colors HAROLD H. TUCKER, Ph.D., and IRWIN SCHWARTZ, M.S.* Presented May 27, 1970, New York City Synopsis--Even though the INTERMEDIATES currently used by the manufacturers of oxi- dation hair colors are relatively pure, certain defects in the finished formulations have been traced to the presence of IMPURITIES in these products. Reported in this paper are the results of PURIFICATION, by RECRYSTALLIZATION, of 4-nitro-o-phenylenediamine, nitro-p-phenylenediamine, 4-amino-2-nitrophenol, 2-amino-5-nitrophenol, and 2-amino-4- nitrophenol. It has been shown that the formation of a precipitate in a HAIR DYE base solution, on ageing, may be caused by impurities, other than iron, present in the NITRO intertnediates and that this defect can be corrected by recrystallization of these intermediates. INTRODUCTION During the past decade much more attention has been given to the purity o[ products used by the manu[acturers of permanent hair colors. Suppliers have been requested to furnish products meeting in- creasingly rigid specifications and the methods o[ control have become much more sophisticated. Even though the intermediates currently being used by the manu[acturers o[ hair colors are relatively pure, certain de[ects in the finished formulations have been traced to the presence o[ impurities in these products. Reported in this paper are the results ot• purification, by recrystallization, o[ 4-nitro-o-phenylenediamine, nitro- p-phenylenediamine, 4-amino-2-nitrophenol, 2-amino-5-nitrophenol, and 2-amino-4-nitrophenol. These are the five leading nitro intermediates used in both permanent and semipermanent hair colors. * Lowenstein Dyes & Cosmetics, Inc., 420 Morgan Ave., Brooklyn, N.Y. 11222. 139