Refractive index database

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Optical constants of C2H3N (Acetonitrile)
Moutzouris et al. 2013: n 0.450–1.55 µm

Wavelength: µm

Complex refractive index (n+ik)[ i ]

n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula



300 K (27 °C).


K. Moutzouris, M. Papamichael, S. C. Betsis, I. Stavrakas, G. Hloupis and D. Triantis. Refractive, dispersive and thermo-optic properties of twelve organic solvents in the visible and near-infrared, Appl. Phys. B 116, 617-622 (2013)


[Expressions for n]   [CSV - comma separated]   [TXT - tab separated]   [Full database record]


Acetonitrile, C2H3N

Acetonitrile (C2H3N): A colorless, volatile liquid, acetonitrile possesses a faintly sweet odor reminiscent of almonds. Widely used as a solvent, it has a high dielectric constant and is particularly effective in the dissolution of ionic compounds. In the laboratory, it is commonly employed as a polar aprotic solvent in organic synthesis and chromatographic processes, including high-performance liquid chromatography (HPLC). Acetonitrile is also utilized in the manufacture of pharmaceuticals, perfumes, and rubber products. Its low UV absorbance makes it valuable in UV-visible spectroscopy applications. The compound is miscible with water and most common organic solvents.

Chemical formula


Other names

  • Cyanomethane
  • Ethanenitrile
  • Ethyl nitrile
  • Methanecarbonitrile
  • Methyl cyanide

External links