synthetic dye aniline dye Dye produced from aniline, a poisonous, oily liquid. Used to make the earliest synthetic dyes methyl dye magenta mauve (dye) pink mauve alizarin An orange or red crystalline compound prepared from the madder plant, the chief coloring agent of madder; now made synthetically from anthraquinone. Used primarily in making red pigment and dye Perkin's violet aniline purple aniline dye, synthetic anilin dye, aniline fuschine aniline violet purple, aniline violet, aniline violet, Perkin's mauve, pink dye, methyl alizarina dihydroxy anthraquinone