The Dyeing of Woollen Fabrics Part 18

_Dark Blue_.--A somewhat brighter and less red shade than is obtained by working as in the last recipe is given by mordanting with 3 lb.

b.i.+.c.hromate of potash, 2 lb. tartar, and 2-1/2 oz. sulphuric acid, and then dyeing with 17 lb. Alizarine Cyanine G extra.

_Dark Blue_.--Mordant with 3-1/2 lb. b.i.+.c.hromate of potash, 2 lb.

tartar, and 3 oz. sulphuric acid. Dye with 18 lb. Alizarine Cyanine G G.

_Peac.o.c.k Blue_.--Mordant with 4 lb. fluoride of chrome and 2 lb.

oxalic acid. Dye with 18 lb. Alizarine Cyanine G G.

The addition of from 2 lb. to 5 lb. acetate of ammonia in working with the Alizarine Cyanines is a considerable advantage, by causing the dye-stuff to penetrate the fibre better and to give more uniform shades.

_Medium Blue_.--Mordant with 3 lb. b.i.+.c.hromate of potash and 2 lb.

oxalic acid. Dye with 5 lb. Brilliant Alizarine Blue G, and 2 lb.

acetic acid.

_Black Blue_.--Mordant as in the last. Dye with 20 lb. Brilliant Alizarine Blue G and 2 lb. acetic acid.

_Dark Navy_.--Mordant as in the last recipe and dye with 5 lb. (p. 158) Alizarine Cyanine 3 R double, 5 lb. Alizarine Blue G W, 2 lb.

Brilliant Alizarine Blue G, and 2 lb. acetic acid.

_Medium Blue_.--Mordant as in the last. Dye with 5 lb. Alizarine Blue G W, 2-1/2 lb. Brilliant Alizarine Blue G, and 2 lb. acetic acid.

_Lavender Blue_.--Mordant with 3 lb. b.i.+.c.hromate of potash and 2-1/4 lb. tartar. Dye with 2 lb. Alizarine Blue A.

_Navy_.--Mordant as in the last recipe, and dye with 20 lb. Alizarine Blue A.

_Deep Sky Blue_.--Mordant with 3 lb. b.i.+.c.hromate of potash and 1 lb.

oxalic acid, then dye with 2-1/2 lb. Chrome Blue.

_Bright Blue_.--A very fine bright shade is obtained by mordanting as in the last, and then dyeing with 10 lb. Chrome Blue.

_Lilac Blue_.--Mordant with 2 lb. b.i.+.c.hromate of potash and 1-1/2 lb.

tartar. Dye with 4 lb. Alizarine Blue D N W. Alizarine Blue R gives somewhat bluer shades than the D N W brand.

_Slate Blue_.--Mordant with 3 lb. b.i.+.c.hromate of potash and 2-1/2 lb.

tartar. Dye with 2-1/2 lb. Alizarine Blue D N W, 4 oz. Alizarine Brown, and 1-2/3 oz. Alizarine Yellow.

_Peac.o.c.k Blue_.--Mordant with 3 lb. b.i.+.c.hromate of potash and 2-1/2 lb.

tartar. Dye with 6 lb. Alizarine Blue D N W, 3 lb. Alizarine Yellow, and 1-1/2 lb. Patent Blue A, adding a little acetic acid to the dye-bath.

_Paris Blue_.--Mordant as in the last recipe. Dye with 3 lb. Galleine, 1 lb. Alizarine Blue D N W, and 1 lb. Patent Blue A, adding a little acetic acid.

_Grey Blue_.--Mordant as above and dye with 4-1/2 lb. Alizarine Blue D N W, and 1 lb. Alizarine Brown.

_Blue_.--Mordant with 10 lb. alum, 3 lb. tartar, and 2 lb. oxalic acid. Dye with 15 lb. Anthracene Blue W G, 3 lb. acetate of lime, and 1 lb. tannic acid.

_Red Navy_.--Mordant as in the last recipe and dye with 15 lb. (p. 159) Anthracene Blue B W, 3 lb. acetate of lime, and 3/4 lb. tannic acid.

_Dark Blue_.--Mordant with 1 lb. b.i.+.c.hromate of potash and 2 lb.

tartar. Then dye with 20 lb. Anthracene Blue W B. Anthracene Blue W G gives slightly greener shades than the W B brand, while the W R blue gives redder shades.

Grounding wool with various tints of indigo is a favourite method of producing many useful shades on wool. In general it is a good plan, as the bottom so given is a fast and permanent one, and is not in any way affected (so far as the stability of the colour is concerned) by the subsequent dyeing operations, care of course being taken that these are the usual acid or mordanting baths. The only drawback against bottoming with indigo is the increased cost of dyeing necessitated by the extra labour, and materials required to dye the bottom. As to the methods and materials required, they are just those usually employed in indigo dyeing, and these have been described. The hydrosulphite vat, or Messrs. Holliday's patent indigo, is, perhaps, the most convenient method to adopt.

_Dark Slate_.--Give a medium indigo bottom, then mordant with 3 lb.

fluoride of chrome and 1 lb. oxalic acid, and dye with 1-1/2 lb.

Anthracene Brown W, 1/2 lb. Alizarine Bordeaux G, and 1 oz. Diamond Flavine.

_Dark Navy_.--Give a medium indigo bottom in the vat, then mordant with 3 lb. fluoride of chrome and 1-1/2 lb. tartar, finally dyeing with 6-1/2 lb. Alizarine Cyanine G, and 1-1/2 lb. Alizarine Bordeaux G.

_Dark Blue_.--Give a medium indigo bottom, then mordant with 6 lb.

fluoride of chrome and 2 lb. oxalic acid, finally dyeing with 14 lb.

Alizarine Cyanine Black.

_Blue Black_.--Give a deep indigo bottom in the vat, then mordant with 3 lb. b.i.+.c.hromate of potash and 2 lb. tartar, finally dyeing with (p. 160) 6 lb. Alizarine Cyanine Black and 1-1/2 lb. Alizarine Cyanine 3 R double.

VIOLET SHADES ON WOOL.

Violet shades can only be obtained from the coal-tar colours, and of these there are not many. The recipes which are given below will serve to show what dye-stuffs are available, and will give some idea of the tints they dye.

#With Direct Dyes.# _Pale Violet_.--Prepare the dye-bath with 1/2 lb.

Sulphon Cyanine, 1/4 lb. Geranine B, 5 lb. Glauber's salt, and 5 lb.

acetate of ammonia, working at the boil for one hour.

#With Basic Dyes.# _Violet_.--The dye-bath is made with 1 lb. Methyl Violet 3 B, and 10 lb. Glauber's salt. A fine pure shade of violet is obtained. Methyl Violet is made in many brands, distinguished as B, B B, 2 B, 4 B, etc. By using either one or the other of these, a variety of tints of violet, from a red shade with Methyl Violet R through violet (B) to a violet blue with Methyl Violet 7 B, can be dyed.

#Puce.#--A very bright shade of puce is dyed by using Methyl Violet R, and 10 lb. Glauber's salt.

#With Acid Dyes.# _Violet_.--Make the dye-bath with 2 lb. Acid Violet 4 B S, 10 lb. Glauber's salt, and 2 lb. sulphuric acid. This gives a pure violet shade. If Acid Violet 6 B S be used a bluer shade is obtained.

_Reddish Puce_.--A very bright red tint of puce is obtained by using 2 lb. Acid Violet 4 R S, 10 lb. Glauber's salt, and 2 lb. sulphuric acid.

_Bluish Violet_.--Make the dye-bath with 3 lb. Acid Violet 5 B, 10 lb.

Glauber's salt, and 2 lb. sulphuric acid, working at the boil for one hour.

_Lavender_.--Use 4 oz. Acid Violet 5 B, 1 oz. Azo Fuchsine G, 1/16 oz.

Fast Green bluish, 10 lb. Glauber's salt and 2 lb. sulphuric acid.

_Deep Violet_.--A fine deep shade is obtained by using 2-3/4 lb.

Chromotrop 6 R, 2-1/2 lb. Cyanine B, 10 lb. Glauber's salt, and (p. 161) 2 lb. sulphuric acid, working at the boil for one hour.

_Mauve_.--Use 2 lb. Acid Mauve B, 10 lb. Glauber's salt, and 2 lb.

sulphuric acid.

_Bright Violet_.--Use 2 lb. Formyl Violet S 4 B, 10 lb. Glauber's salt, and 2 lb. sulphuric acid.

_Bright Violet_.--Use 2 lb. Acid Violet 6 B N, 10 lb. Glauber's salt, and 2 lb. sulphuric acid.

_Violet_.--Use 2 lb. Acid Violet N, 2 lb. sulphuric acid, and 10 lb.