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To Dye with Aniline Blue

To 100 pounds of fabric dissolve 14 pounds of aniline blue in 3 quarts hot alcohol; strain strain through a filter, and add it to a bath of 130° Fahr., also 10 pounds Glauber's salts and 5 pounds acetic acid. Enter the goods, and handle them well for 20 minutes; next heat it pass through a bath containing sulphuric acid. 2607. To Dye with Aniline Violet and Purple. The various aniline purples known as Parme, Violet de Fuchsin, Victoria Violet, and Amaranth, are used in the same manner as Bleu de Lyon (see No. 2603), omitting the sulphuric acid. Acidulate the bath by sulphuric acid, or use sulphate of soda; both these substances render the shade bluish .

Dye at 212°. To give a fair middle shade to 10 pounds of wool, a quantity of solution equal to 1/2 to 1/4 ounce of the solid dye will be required. The color of the dyed fabric is imslowly to 200° Fahr.; then add 5 pounds sul- proved by washing in soap and water, and phuric acid diluted with water. Let the whole then passing through a bath soured by sulthen passing through a bath soured by sulboil 20 minutes longer, then rinse and dry. phuric acid. According to Mr. Hirsch, cotton If the aniline be added in two or three propor- is treated as follows: Prepare the goods for tions during the process of coloring, it will fuchsine, and turn them over a few times in a facilitate the evenness of the color. The blue, tepid solution of 21 ounces crystallized pertepid solution of 24 ounces crystallized peror red shade of blue, is governed by the kind chloride of tin, for every 10 pounds of goods. of aniline used, as there is a variety in the Remove the latter, add as much violet solù- Remove the latter, add as much violet soltion as the shade requires, dye for a quarter of an hour, wring well, and dry. Washing in a solution of alum and starch will render the color more solid. market. Hard and close-wove fabrics, such as braid, ought to be prepared in a boiling solution of 10 pounds sulphuric acid and 2 pounds tartaric acid before coloring with the aniline,