Home

pyridine

Pyridine is a basic heterocyclic aromatic organic compound with the formula C5H5N. It consists of a six-membered ring with one nitrogen atom, is structurally related to benzene, and is planar and aromatic.

Pyridine is a colorless, flammable liquid with a distinctive, unpleasant odor. It is miscible with water and

Pyridine is a common industrial reagent and building block. It is used as a solvent for polymers

Production of pyridine is on a large scale. Historically it was obtained from coal tar; today it

Safety: Pyridine is toxic and can irritate the skin, eyes, and respiratory tract. It is flammable and

Occurrence: It occurs only in trace amounts in some tobacco smoke and other natural materials.

with
most
organic
solvents.
It
boils
at
about
115°C
and
freezes
at
around
-41°C.
The
conjugate
acid
has
a
pKa
near
5.25,
reflecting
moderate
basicity;
as
a
result
it
readily
forms
pyridinium
salts
and
serves
as
a
versatile
base
and
ligand
in
coordination
chemistry.
and
resins
and
as
a
precursor
in
the
manufacture
of
agrochemicals,
vitamins
(notably
niacin),
pharmaceuticals,
and
specialty
chemicals.
It
also
serves
as
a
ligand
in
metal
complexes
and
as
an
acid
scavenger
and
catalyst
component
in
various
reactions.
is
produced
from
coal-tar–derived
streams
and
refinery
byproducts,
often
via
catalytic
oxidation
and
dehydrogenation
steps
of
related
heterocycles.
should
be
handled
in
well‑ventilated
areas
with
appropriate
protective
equipment.