Information About Acid Dyes and Their Colors

Spirit soluble Nigrosines, which are soluble in alcohol butthat is very fast to lighto The German dyeso Alizarine
not in water, are used in wood spirit stains to darkenIrisol D and Ro Bright bluish violet wool and silk dyes,
other colors. They are also used in polishes, black spiritwhich are very fast to lighto Alizarine Emeraldol G (
varnishes, for staining leather, for printing calico andwhich is a paste)o A bluish green dye for wool and silk
dyeing silk, and to produce shades that are bluish blackand is moderately fast to lighto Alizarine Astrol B and
in color. Quite often they are mixed with Chrysoidine RG, greenish blue, and very fast to light on wool and
(spirit soluble), which is of a yellowish red color. Thecottono Alizarine Rubinols, some of which are of a
various brands of spirit-soluble Nigrosines which arebluish red color and fast to light, while others are pink
sold are similar to Shultz's No. 698.and salmon in hue and are used on dress goods,
Xanthene Colorscarpets, tapestry and designer window toppers, and
These colors form a group containing some of thedoor pediment.
most brilliant acid and basic dyes made and are, inNitroso and Nitro Dyes
general, faster to light than the triphenylmethane colors.There are only a few nitroso colors and contain only
These dyes are ideal for dyeing wood materials for"acid" and "mordant" dyes. The important acid
items such as wood corner blocks, wood fireplacewater-soluble dye in the Nitroso group is often called
designs, and wood frames.Naphthol Green B. It comes in powder or paste form,
Anthracene or Anthraquinone Dyesis very fast to light, and is used as a wool dye, the
This large group contains 67 acid and mordant dyes,coloring-matter being used in an acid bath containing an
and includes the alizarines and 82 vat dyes. Theseiron salt. Naphthol Green is also used in the
colors are, in general, remarkable for great fastness tomanufacture of pigments. This color is a very useful
light. The anthraquinone class does not include anyyellowish green dye often recommended as a stain
basic colors.for wood finishing on items such as frieze boards,
The "acid" colors of the group are numerous andwood frames, and hardwood moulding because of its
important, and include:o Alizarine Direct Blue, Violet, andlightproof qualities.
Greeno Alizarine Sapphire, which is a reddish-blue dye