Application of acetonitrile

Acetonitrile is used mainly as a solvent in the purification of butadiene in refineries.
It is widely used in battery applications because of its relatively high dielectric constant and ability to dissolve electrolytes. For similar reasons it is a popular solvent in cyclic voltammetry. Its low viscosity and low chemical reactivity make it a popular choice for liquid chromatography. Acetonitrile plays a significant role as the dominant solvent used in the manufacture of DNA oligonucleotides from monomers. Industrially, it is used as a solvent for the manufacture of pharmaceuticals and photographic film.
Acetonitrile is a common two-carbon building block in organic synthesis of many useful chemicals, including acetophene, thiamine, acetamidine, and α-napthaleneacetic acid. Its reaction with cyanogen chloride affords malononitrile. In inorganic chemistry, acetonitrile is employed as a solvent and often an easily displaceable ligand.

Acetonitrile is the chemical compound with formula CH3CN and also known as methyl cyanide, is the simplest organic nitrile, which is according to general organic chemistry.
It is a toxic, colorless liquid with an ether-like odor and a sweet .
Acetonitrile forms an azeotrope with water .