Mauve Dye.

Scientific American 2, 7.1.1860

This dye was invented by Mr. Perkins, of Greenford Green, near London. It is prepared by taking equal proportions of sulphate of aniline and bi-chromate of potash, dissolving them in water, mixing and allowing them to stand for several hours. The whole is then thrown upon a filter, and the black precipitate which is formed is washed and dried. This black substance is then digested in coal-tar naphths, to extract a brown resinous substance; and finally digested with alcohol to dissolve out the coloring matter, which is left behind on distilling off the spirit, as a coppery friable mass. This is the dyeing agent producing all the varieties of purples known by the name of mauve. The particularity of these purples consists in the peculiar blend-ing of the red and blue of which they are constituted. These hues admit of almost infinite variation; consequently, we may have many varities of red mauve, and as many of blue mauve, and any depth of tint can be secured. The permanence of these combinations is their strongest recommendation.
-London paper.

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