Dr. Lange... (the comparative use of tartar emetic and De Haen's antimony salt)

Textile Mercury, 27.4.1889

Dr. Lange contributes to the Leipziger Farber Zeitung, a paper on the comparative use of tartar emetic and De Haen's antimony salt, which is a mixture of fluoride of antimony and ammonium sulphate. He says that cloth prepared with the latter is brighter and clearer and dyes up livelier shades than when tartar emetic is used. Magenta dyes somewhat brighter, methyl violet has a slightly redder shade; methylene blue is darker and redder; saffranine comes up a little more blue, auramine darker, bismarck brown brighter, and brilliant green more yellow. The trials were made on cotton mordanted with 4½ per cent. of tannic acid, one part being fixed with tartar emetic, the other with Dr. Haen's, the strengths of the baths beings() arranged that the amount of metallic antimony was equal in both cases.