“…The indicator solutes used in this work were the following (numbers following the indicator name are those employed by Kamlet et al1 and for purposes of identification will be retained here): p-nitroanisole (1), 4-ethylnitrobenzene (4), TV.VV-diethyl-4-nitroaniline (6), 4-(dimethylamino)benzophenone (7), ethyl p-(dimethylamino)benzoate (9), MTV-dimethyl-p-nitroaniline (13), p-nitroaniline (14), 4-(dimethylamino)benzaldehyde (19), 2nitro-/>-toluidine (23), w-nitroaniline (28), Ar-methyl-2-nitroaniline (32), 2-nitroaniline (33), A,jV-dimethyl-4-nitrosoaniline (39), and 2-nitroanisole (45). Sources of the indicator solutes were Aldrich Chemical Co. (1, 4, 7, 9, 14, 19, 32, 39, 45), Eastman Chemical Co. (13, 28), and J. T. Baker Chemical Co. (33). N,N-Diethyl-4-nitroaniline was kindly provided by Dr. M. J. Kamlet (Naval Surface Weapons Center, Silver Spring, MD).…”