A class of synthetic, organic dyes originally
obtained from aniline (coal tars), which were, in
fact, the first synthetic dyes. Today the term is
used with reference to any synthetic organic dyes
and pigments, regardless of source, in contrast to
animal or vegetable coloring materials, natural
earth pigments, and synthetic inorganic pigments.
Aniline dyes are classified according to their
degree of brightness or their light fastness.
Basic dyes are known for their extreme brightness,
as well as for their lack of COLOR FASTNESS .
Aniline dyes are used to impart color to paper,
cloth, leather, etc. Also called "coal tar dyes."
See also: ACID
DYES ;DYE ;LAKE .
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