PRODUCT IDENTIFICATION
230-150-4
H.S. CODE
TOXICITY
CLASSIFICATION
PHYSICAL AND CHEMICAL PROPERTIES
AUTOIGNITION
NFPA RATINGS
REFRACTIVE INDEX
62 C
GENERAL DESCRIPTION AND APPLICATIONS
PYRIDINE,
also called azabenzene and azine, is a heterocyclic
aromatic tertiary amine characterized by a six-membered
ring structure composed of five carbon atoms and
a nitrogen which rplace one carbon-hydrogen unit
in the benzene ring. The simplest member of the
pyridine family is pyridine itself. It is colorless,
flammable, toxic liquid with a unpleasant odor,
miscible with water and with most organic solvents,
boils
at 115 C. Its
aqueous solution is slightly alkaline. It is incompatible
and reactive with strong oxidizers and strong acids,
and reacts violently with chlorosulfonic acid, maleic
anhydride, oleum, perchromates, b-propiolactone,
formamide, chromium trioxide, and sulfuric acid.
Liquid pyridine easily evaporates into the air.
If it is released to the air, it may take several
months to years until it breaks down into other
compounds. It is made from crude coal tar or from
other chemicals based on acetaldehyde and ammonia.
It is used as a solvent as a denaturant for alcohol
and is added to ethyl alcohol to make it unfit for
drinking. It is a starting material in the synthesis
of other compounds used as an intermediate in making
insecticides, herbicides, medicines, vitamins, food
flavorings, dyes, rubber chemiclas, and adhesives
such as sulfapyridine, pyribenzamine, pyrilamine
and piperidine. It is also used as a denaturant
for antifreeze mixtures, as a dyeing assistant in
textiles and in fungicides. Compounds not made from
pyridine but containing its ring structure include
niacin and pyridoxal; isoniazid, nicotine and several
other nitrogenous plant products. Pyridine derivatives
are are
used as solvents and organic intermediates
for pesticides products, pharmaceuticals, waterproofings,
paints, explosives, dyestuffs, rubber chemicals,
vitamins, sulfa drugs and disinfectants.
APPEARANCE
97.0 - 101.0%
25kgs
in fiber drum