The second in the series of color developing agents used in developing color films, commonly known as CD-2, is chemically known as 4-Diethylamino-o-toluidine 1,4-Benzenediamine, N4,N4-diethyl-2-methyl- or N1,N1-Diethyl-3-methylbenzene-1,4-diamine 4-(Diethylamino)-2-methylaniline.