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Acetonitrile

A detailed illustration of a Acetonitrile chemical bottle with clear labeling, including hazard symbols and safety instructions, placed against a white background.

Synonyms:

ACN, cyanomethane, ethyl nitrile, ethanenitrile, methanecarbonitrile, methyl cyanide​

Linear formula:

CH3CN

Molecular Weight:

41.05

CAS No.:

75-05-8

Beilstein No.:

741857

EC No.:

200-835-2

MDL No.:

MFCD00001878


Products

HPLC (10)

LC/MS (2)

mass spectrometry (MS) (2)

DNA amplification (1)

GC/GC (1)

HPLC-GC (1)

ACS reagent (3)

Anhydrous (3)

Biotechnology (1)

Puriss P.A. (1)

Reagent Grade (1)

99% (8)
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Acetonitrile
34851

Acetonitrile

≥99.9%, gradient grade, suitable for HPLC

Acetonitrile
34998

Acetonitrile

≥99.9%, HPLC Plus, suitable for IR spectroscopy, HPLC

Acetonitrile
1.00030

Acetonitrile

≥99.9% (GC), gradient grade, suitable for HPLC, Reag. Ph Eur, LiChrosolv®

Acetonitrile
1.00029

Acetonitrile

≥99.9% (GC), suitable for LC/MS, LiChrosolv®

Acetonitrile-d<SUB>3</SUB>
151807

Acetonitrile-d3

≥99.8 atom % D

Acetonitrile
360457

Acetonitrile

≥99.5%, ACS reagent

Acetonitrile
271004

Acetonitrile

99.8%, anhydrous, suitable for solid phase extraction (SPE)

Acetonitrile
439134

Acetonitrile

≥99.9%, gradient grade, suitable for UV/Vis spectroscopy, HPLC

Acetonitrile
1.14291

Acetonitrile

≥99.8% (GC), HPLC grade, isocratic grade, suitable for HPLC, LiChrosolv®

Acetonitrile
L010000

Acetonitrile

Acetonitrile
900667

Acetonitrile

≥99.92%, suitable for mass spectrometry (MS), UHPLC

Acetonitrile
AX0152

Acetonitrile

≥99.9% (GC), anhydrous, biotech. grade

Acetonitrile
34881-M

Acetonitrile

≥99.8% (GC), suitable for HPLC-GC, HPLC

Acetonitrile
494445

Acetonitrile

≥99.93%, biotech. grade

Acetonitrile
1.00003

Acetonitrile

≥99.5% (GC), ACS reagent, for extraction and analytical purposes, Reag. Ph Eur, EMSURE®

Acetonitrile
1.03725

Acetonitrile

≥99.9% (GC), suitable for UHPLC, LiChrosolv®

Acetonitrile solution
900686

Acetonitrile solution

≥99.6%, suitable for mass spectrometry (MS), contains 0.1 % (v/v) formic acid

Acetonitrile
1.15500

Acetonitrile

≥ 99,0 % (HPLC), for preparative purposes, synthesis, cleaning, extraction and analytical purposes, EMPLURA®

Acetonitrile
L010100

Acetonitrile

Acetonitrile with 0.1% (v:v) trifluoroacetic acid
4.80448

Acetonitrile solution

HPLC grade, suitable for HPLC, LiChrosolv®, contains 0.1% (v/v) trifluoroacetic acid

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Acetonitrile or methyl cyanide is a highly volatile, aprotic polar organic solvent. Acetonitrile is used in analytical chemistry as a solvent or mobile phase. It is also utilized as a solvent in organic reactions such as the synthesis of alkyl hydroperoxides by oxidizing alkane with hydrogen peroxide in the presence of iron complexes.

Acetonitrile is also used in pharmaceuticals for drug synthesis, purification, and formulation. It is particularly useful for drugs that are poorly soluble in water or other common solvents.

Acetonitrile as a solvent in spectroscopy

Acetonitrile is widely used in various spectroscopic techniques, including infrared (IR) and nuclear magnetic resonance (NMR). It is also used as a solvent in ultraviolet-visible (UV-Vis) spectroscopy, due to its transparency and relatively low UV absorption compared to many other solvents, making it an excellent choice for UV-Vis measurements.

Deuterated acetonitrile (acetonitrile-d3): Acetonitrile-d3 along with or without trimethyl silane is used as a solvent in Infra-red (IR) and NMR spectroscopy and also as a cartridge in high-performance liquid chromatography (HPLC)-SPE (solid-phase extraction)-NMR technique.

Acetonitrile as a mobile phase in chromatography

As acetonitrile exhibits low viscosity, high elution strength and compatibility with a wide range of analytes, it is utilized as a mobile phase component in many chromatographic techniques such as HPLC, liquid chromatography-mass spectrometry (LC-MS), ultra high-performance liquid chromatography (UHPLC) and in gas chromatography.

High-performance liquid chromatography (HPLC) grade acetonitrile: Gradient grade acetonitrile or acetonitrile solution containing a specific concentration of trifluoroacetic acid, formic acid, 2-propanol or ammonium formate is used as a mobile phase in HPLC.

Acetonitrile as a reference standard

Acetonitrile is used as a pharmaceutical primary or secondary grade reference standard in alcohol determination and as a residual solvent.
 


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