Textile Mercury, 27.4.1889
Alizarin black is a valuable dye, which was first described by Roussin under the name of Napthazarin, and lately the Badische Aniline and Soda Fabrik have placed on the market soluble product for wool dyeing. Alizarin black is dyed on cleansed wool with the following process: - 100lbs. of the wool is mordanted by boiling for one hour in a bath of 3 per cent. of bichromate of potash and 1 per cent. of cream of tartar; the dyeing is done in a boiling bath, containing 15-20 per cent. alizarine paste. By using 5-l0 per cent. fast greys are obtained.
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