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Definition of coal tar
Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of coal tar is as below...
Coal tar () A
thick,
black,
tarry
liquid,
obtained
by the
distillation
of
bituminous
coal in the
manufacture
of
illuminating
gas; used for
making
printer's
ink, black
varnish,
etc. It is a
complex
mixture
from which many
substances
have been
obtained,
especially
hydrocarbons
of the
benzene
or
aromatic
series..
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Pseudo-cumene
::
Pseudo-cumene
(n.) A
hydrocarbon
of the
aromatic
series,
metameric
with
mesitylene
and
cumene,
found in coal tar, and
obtained
as a
colorless
liquid..
Carbolic
::
Carbolic
(a.)
Pertaining
to, or
designating,
an acid
derived
from coal tar and other
sources;
as,
carbolic
acid
(called
also
phenic
acid, and
phenol).
See
Phenol..
Parvoline
::
Parvoline
(n.) A
liquid
base,
C/H/N,
of the
pyridine
group,
found in coal tar; also, any one of the
series
of
isometric
substances
of which it is the
type..
Rubidine
::
Rubidine
(n.) A
nitrogenous
base
homologous
with
pyridine,
obtained
from coal tar as an oily
liquid,
C11H17N;
also, any one of the group od
metameric
compounds
of which
rubidine
is the
type..
Cryptidine
::
Cryptidine
(n.) One of the
quinoline
bases,
obtained
from coal tar as an oily
liquid,
C11H11N;
also, any one of
several
substances
metameric
with, and
resembling,
cryptidine
proper..
Cresol
::
Cresol
(n.) Any one of three
metameric
substances,
CH3.C6H4.OH,
homologous
with and
resembling
phenol.
They are
obtained
from coal tar and wood tar, and are
colorless,
oily
liquids
or
solids.
[Called
also
cresylic
acid.].
Naphthalene
::
Naphthalene
(n.) A white
crystalline
aromatic
hydrocarbon,
C10H8,
analogous
to
benzene,
and
obtained
by the
distillation
of
certain
bituminous
materials,
such as the heavy oil of coal tar. It is the type and basis of a large
number
of
derivatives
among
organic
compounds.
Formerly
called
also
naphthaline..
Collidine
::
Collidine
(n.) One of a class of
organic
bases,
C8H11N,
usually
pungent
oily
liquids,
belonging
to the
pyridine
series,
and
obtained
from bone oil, coal tar,
naphtha,
and
certain
alkaloids..
Fluoranthene
::
Fluoranthene
(n.) A white
crystalline
hydrocarbon
C/H/, of a
complex
structure,
found as one
ingrdient
of the
higher
boiling
portion
of coal tar..
Viridine
::
Viridine
(n.) A
greenish,
oily,
nitrogenous
hydrocarbon,
C12H19N7,
obtained
from coal tar, and
probably
consisting
of a
mixture
of
several
metameric
compounds
which are
higher
derivatives
of the base
pyridine..
Leucoline
::
Leucoline
(n.) A
nitrogenous
organic
base from coal tar, and
identical
with
quinoline.
Cf.
Quinoline..
Pyridine
::
Pyridine
(n.) A
nitrogenous
base,
C5H5N,
obtained
from the
distillation
of bone oil or coal tar, and by the
decomposition
of
certain
alkaloids,
as a
colorless
liquid
with a
peculiar
pungent
odor. It is the
nucleus
of a large
number
of
organic
substances,
among which
several
vegetable
alkaloids,
as
nicotine
and
certain
of the
ptomaines,
may be
mentioned.
See
Lutidine..
Kyanol
::
Kyanol
(n.) A base
obtained
from coal tar.
Coal Tar
::
Coal tar () A
thick,
black,
tarry
liquid,
obtained
by the
distillation
of
bituminous
coal in the
manufacture
of
illuminating
gas; used for
making
printer's
ink, black
varnish,
etc. It is a
complex
mixture
from which many
substances
have been
obtained,
especially
hydrocarbons
of the
benzene
or
aromatic
series..
Phlorone
::
Phlorone
(n.) A
yellow
crystalline
substance
having
a
peculiar
unpleasant
odor,
resembling
the
quinones,
and
obtained
from
beechwood
tar and coal tar, as also by the
oxidation
of
xylidine;
--
called
also
xyloquinone..
Picene
::
Picene
(n.) A
hydrocarbon
(C/H/)
extracted
from the
pitchy
residue
of coal tar and
petroleum
as a
bluish
fluorescent
crystalline
substance.
Asphaltum
::
Asphaltum
(n.) A
composition
of
bitumen,
pitch,
lime, and
gravel,
used for
forming
pavements,
and as a
water-proof
cement
for
bridges,
roofs,
etc.;
asphaltic
cement.
Artificial
asphalt
is
prepared
from coal tar, lime, sand, etc..
Coridine
::
Coridine
(n.) A
colorless
or
yellowish
oil,
C10H15N,
of a
leathery
odor,
occuring
in coal tar,
Dippel's
oil,
tobacco
smoke,
etc.,
regarded
as an
organic
base,
homologous
with
pyridine.
Also, one of a
series
of
metameric
compounds
of which
coridine
is a
type..
Phenanthrene
::
Phenanthrene
(n.) A
complex
hydrocarbon,
C14H10,
found in coal tar, and
obtained
as a white
crystalline
substance
with a
bluish
fluorescence..
Fluorene
::
Fluorene
(n.) A
colorless,
crystalline
hydrocarbon,
C13H10
having
a
beautiful
violet
fluorescence;
whence
its name. It
occurs
in the
higher
boiling
products
of coal tar, and is
obtained
artificially..
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