Important: Safety Warning
This page, written for children, describes experiments or amusements involving hazardous chemicals, electricity, or projectiles. The activities described have caused serious injuries and should not be attempted at any age without proper training, supervision, and equipment.
In addition, this page describes trade processes that use dangerously toxic materials such as cyanide solutions, mercury amalgams, or strong acids. These processes require training, equipment, and precautions far beyond what the text describes.
This information has been left in for historical purposes but should not be acted upon.
Home › Aniline Colors › Water-Glass as a Solvent of soap bath
Water-Glass as a Solvent of soap bath
Coralline. Dissolve coralline in a boiling
2598. To Dye Silk with Aniline mixture of 1 part concentrated water-glass Green. Iodine green, or night green, dis- (silicate of soda or potassa of the consistency solves easily in warm water. For a liquid of a thick syrup), and 4 parts water, and, after dye, 1 pound may be dissolved in 1 gallon alcooling, apply this solution as a paint for cohol, and mixed with 2 gallons of water conwood (white woods containing little or no taining 1 ounce sulphuric acid. This color is tannic acid are preferable), paper, toys, artifi- almost always a failure in the hands of the cial flower tissues, &c., to all of which ma- amateur, and is not recommended. For silk, terials this solution of coralline imparts a no addition to the dye bath is required, the beautiful carmine red tint. temperature being kept under 180° Fahr. 2588. Preparation of Innoxious Cor- 2599. To Dye Wool with Aniline alline. M. Guyot states that coralline is fre- Green. For wool, prepare two baths, c1.e quently poisonous, because the rosolic acid, used to obtain it, contains phenol (carbolic acid), and this dangerous quality in the product can only be avoided by using the exact proportions necessary, in manufacturing the compounds. containing the dissolved dye and a quantity of carbonate of soda, or borax. In this the wool is placed, and the temperature raised to 2120 Fahr. A grayish green shade is produced, which must be brightened and fixed in a second bath of water at 100° Fahr., to which some acetic acid has been added. Cotton requires preparation by sumach. (See No. 2577.)