Dyes and dyeingPellew, Charles E. (Charles Ernest), Viscount Exmouth
Science
Dyes and dyeing
Pellew, Charles E. (Charles Ernest), Viscount Exmouth
Dyes and dyeing
Nor are the shades of these Basic dyes, as a rule, as attractive as
those of other classes. The strong and brilliant, not to say coarse,
shades of Methyl Violet, Malachite Green, Aniline Red, and the rest,
which created such a sensation when they first appeared in the early
sixties, were the particular colors which provoked John Ruskin to
vehement, if not unparliamentary remarks. When unmixed they certainly
do harrow the feelings of those artistically inclined, as much now as
then. They are rarely seen now, for the taste of the public has been
sufficiently educated to make a demand for softer shades. As before
explained, nothing is easier than to soften these fierce, harsh
colors to most beautiful and harmonious tints by mixing into them a
mere trace of their complementaries.
_Advantages._—In spite of all that can be said against them, these
cheap, brilliant, and very powerful dyes are not to be despised, and
should still be found in the outfit of a well-equipped dyer. For
straw, raffia, chips, willow, and other materials used so largely
for hats and for basket-work, these dyes are distinctly valuable,
and, if supplemented by fast Acid colors for light shades, or for
particularly fast effects, will be found satisfactory enough. So,
too, for leather they will be found extremely useful, excepting where
delicate shades, fast to light, are required.
Some kinds of artificial silk, also, especially those made from
nitro-cellulose and hence possessed of acid properties, dye far
better with these than with any other dyes, although, as explained
above, the colors will be far from permanent.
For the craftsman, the fastness to washing of these dyes is a
matter of very little importance, because they are used by him so
exclusively upon materials such as basketry, leather, and artificial
silk, which are never exposed to rough handling in boiling soap and
water.
As regards their fastness to light, the greater number of these
must be classed as belonging to the fourth class, i.e., distinctly
fugitive in character. On the other hand, some special ones can be
selected from the group which are not only distinctly faster than the
rest, but are fast enough to be well up in the third class, or can at
a stretch, be placed in the second class, i.e., can be considered as
satisfactory, at any rate, against any but very severe exposure.
=The Fastest Basic Colors.=—Among these may be placed the well-known
dyestuff, Methylene Blue, perhaps the most satisfactory of the whole
class. A very good color also is Methylene Heliotrope O (_Metz_),
which, while less brilliant, is far faster than the many brands of
Methyl Violet, Hofmann’s Violet, and the rest, which to most dyers
are the characteristic basic violets.
Public-domain text, read in full here on John Shaqi.
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