Acetonitrile Formula

Acetonitrile is a colourless liquid that is characterized by aromatic fruity odour. Acetonitrile is used as a polar aprotic solvent in organic synthesis and purification of butadiene. Let us learn the chemical properties of Acetonitrile.

Chemical Properties Of Acetonitrile

Chemical formula C2H3N or CH3CN
Molecular weight 41.053 g/mol
Chemical names Methyl cyanide, Cyanomethane, Ethanenitrile
Density 0.786 g/cm3
Boiling point 81.3 to 82.1 °C
Melting point −46 to −44 °C
Solubility in water Miscible

Acetonitrile Structural Formula

Acetonitrile is an aliphatic nitrile and a volatile organic compound. Acetonitrile is less dense than water and its vapour is dense than air (Vapor pressure = 9.71 kPa). The structural formula of Acetonitrile is as shown below in the diagram.

Acetonitrile Structural Formula

Pictorial representation

Structural formula

Applications Of Acetonitrile

  • Because of a high dielectric constant and capable to dissolve electrolytes acetonitriles are mainly used in battery applications.
  • It is used in high-performance liquid chromatography (HPLC).
  • It is used as a solvent in the manufacturing of DNA oligonucleotides, in a pharmaceutical field and in photographic film.

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