288
DYEING AND CALICO PRINTING.
Red Liquor, or Mordant.
White starch . 2 kilos.
British gum . 4 ,,
Strong mordant (see p. 284) ., 10 litres
Lima-wood extradt at 31° Tw. J litre
Gallipoli oil (huile touvnante) . 4
Pyroligneous acid (crude acetic). 5 litres
Hydrochloric acid. J litre
Pyrolignite of lime. 1 kilo.
Add when cold—
Tin-salt .750 grms.
Other Red Mordant (Red 4).
Mordant A (see p. 284). 20 litres
White starch. 6 kilos.
Gallipoli oil .250 grms.
Turpentine (oil of).250 „
Red 4/2.
Mordant A (see p. 284). 24 litres
Water. 6 „
White starch. 6 ,,
Gallipoli oil .250 grms.
Turpentine (oil of).250 „
Mordants for Rose-Colour (Pink).
Boiling water .304 litres
Acetic acid at 11 J° Tw. 14 „
Mordant 5/4 (see p. 284): 625 grms. \
alum, 450 grms. acetate of lead, l 8 ,,
2 litres boiling water .. ., ..)
Dark roasted starch.20 kilos.
Gallipoli oil.375 grms.
Turpentine (oil of) .375 ,,
38 litres2 „
24 ,,
20 kilos.375 g™s.375 ..
In all these cases the acetic or pyroligneous acid must be well mixed withthe mordant before adding it to the water, starch, &c. This is especiallyimportant for light shades.
It is quite clear that these prescriptions are varied in different ways, anddiffer not only in different countries, but also according to the experience andtaste of the manufadturers : those above quoted are all French. The followingare English, but are stated to have been prepared in accordance with principleslaid down in M. D. Kcechlin’s paper on red liquor already alluded to :—
Water, gallons
Alum, lbs.
Acetate of lead, lbs.Crystals of soda ..
No. 1.
No. 2.
No. 3.
45
45
45
100
100
200
100
129
200
10
10
10
No. 4.
No. 5.
No.
45
45
45
190
190
129
190
129
roo
*9
0
0