is the organic compound
with the formula
H. Although the related "linear" dicarboxylic acids adipic
and succinic acids
are water-soluble only to a few percent at room temperature, the water-solubility of glutaric acid is over 50%.
Glutaric acid can be prepared by the ring-opening of butyrolactone
with potassium cyanide
to give the mixed potassium carboxylate-nitrile
that is hydrolyzed to the diacid. Alternatively hydrolysis, followed by oxidation of dihydropyran
gives glutaric acid. It can also be prepared from reacting 1,3-dibromopropane
or potassium cyanide
to obtain the dinitrile, followed by hydrolysis.
, a common plasticizer
and precursor to polyesters
is manufactored by hydrogenation
of glutaric acid and its derivatives.
Glutaric acid itself has been used in the production of polymers such as polyester polyols, polyamides. The odd number of carbon atoms (i.e. 5) is useful in decreasing polymer elasticity.