Manufacturer and builder 7, 1889
- Can you give me directions to prepare rubber-stamp ink in a variety of colors?
- H. D.
Answer.
The usual rubber-stamp inks are prepared with water-soluble aniline colors and glycerine. A good formula, which the American Druggist says it has tested practically, is given by Dieterich. Aniline blue, water-sol., 1B, 3 parts; distilled water, 10 parts; pyroligneous acid, 10 parts; alcohol, 10 parts; glycerine, 70 parts. Mix them intimately by trituration in a mortar. [The blue should be well rubbed down with the water and the glyserine gradually added. When solution is effected, the other ingredients are added.] Other colors are produced by substituting for the blue any one of the following: Methyl violet 3B, 3 parts; diamond fuchsin I, 2 parts; methyl green, yellowish, 4 parts; Vesuvin B. [brown], 5 parts; Nigrosin W. [blue-black], 4 parts. If a bright-red ink is required, 3 parts of eosin BBN are used, but the pyroligneous acid must be omitted, as this would destroy the eosin. Other aniline colors, when used for stamping ink, require to be acidulated.
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