Direct Blue 15 is an
organic compound
In chemistry, organic compounds are generally any chemical compounds that contain carbon- hydrogen or carbon-carbon bonds. Due to carbon's ability to catenate (form chains with other carbon atoms), millions of organic compounds are known. Th ...
that is classified as an
azo dye
Azo dyes are organic compounds bearing the functional group R−N=N−R′, in which R and R′ are usually aryl and substituted aryl groups. They are a commercially important family of azo compounds, i.e. compounds containing the C- ...
. It is a dark blue water soluble solid. It is a popular
substantive dye
A substantive dye or direct dye is a dye that adheres to its substrate, typically a textile, by non-ionic forces.
Overview
The amount of this attraction is known as "substantivity": the higher the substantivity the greater the attraction of th ...
, which means that it useful for dying cotton and related
cellulosic material
Cellulose is an organic compound with the formula , a polysaccharide consisting of a linear chain of several hundred to many thousands of β(1→4) linked D-glucose units. Cellulose is an important structural component of the primary cell wall ...
s. It is produced by
azo coupling
In organic chemistry, an azo coupling is an organic reaction between a diazonium compound () and another aromatic compound that produces an azo compound (). In this electrophilic aromatic substitution reaction, the aryldiazonium cation is the e ...
of
o-dianisidine
''o''-Dianisidine is an organic compound with the formula CH3O)(H2N)C6H3sub>2. A colorless or white solid, it is a bifunctional compound derived via the benzidine rearrangement from ''o''-anisidine.
''o''-Dianisidine is a precursor to some az ...
with the appropriate
naphthalene disulfonate
Naphthalene is an organic compound with formula . It is the simplest polycyclic aromatic hydrocarbon, and is a white crystalline solid with a characteristic odor that is detectable at concentrations as low as 0.08 ppm by mass. As an aromati ...
.
[.]
References
{{Reflist
Azo dyes
Naphthalenesulfonic acids
1-Naphthols
Naphthylamines