271004

Acetonitrile

anhydrous, 99.8%

• Synonym(s): ACN, Cyanomethane, Ethyl nitrile, Methyl cyanide
• Linear Formula: CH₃CN
• CAS Number: 75-05-8
• Molecular Weight: 41.05
• Beilstein: 741857
• EC Number: 200-835-2
• MDL number: MFCD00001878
• eCl@ss: 39031501
• PubChem Substance ID: 57648217
• NACRES: NA.21

Properties

• grade: anhydrous
• Quality Level: 200
• vapor density: 1.41 (vs air)
• vapor pressure: 72.8 mmHg ( 20 °C)
• assay: 99.8%
• form: liquid
• autoignition temp.: 973 °F
• expl. lim.: 16 %
• technique(s): solid phase extraction (SPE): suitable
• impurities: <0.001% water; <0.005% water (100 mL pkg)
• evapn. residue: <0.0005%
• color: colorless
• refractive index: n20/D 1.344 (lit.)
• bp: 81-82 °C (lit.)
• mp: −45 °C (lit.)
• solubility: water: soluble (completely)
• density: 0.786 g/mL at 25 °C (lit.)
• SMILES string: CC#N
• InChI: 1S/C2H3N/c1-2-3/h1H3
• InChI key: WEVYAHXRMPXWCK-UHFFFAOYSA-N

Description

General description

Acetonitrile, an aliphatic nitrile, is widely used as an organic solvent and intermediate in organic syntheses. It is transparent to UV-visible light, which makes it highly applicable in spectrophotometric and fluorimetric techniques. MeCN is utilized as a mobile phase component in many chromatographic techniques, due to its low viscosity, high elution strength and miscibility in water. It also plays a major role as an extractant medium in liquid-liquid extraction, solid-phase extraction or microextraction.

Application

Acetonitrile may be used as a solvent to prepare:

• 1,2-Azidoalcohols and 1,2-azidoamines via cerium(III) chloride assisted ring opening of epoxides and aziridines by sodium azide.
• Cyano-bearing indolinones by oxidative arylalkylation of olefins in the presence of palladium catalyst.

It may also be used as a reactant to synthesize:

• Bis (diphenylphosphino) acetonitrile by reacting with n-butyllithium and then with chlorodiphenylphosphine.
• β-Acetamido ketones via coupling reaction with ketones or ketoesters and aldehydes in the presence of cobalt(II) chloride.

Packaging

100, 100, 250 mL

1, 1, 2, 2, 8, 18, 18, 20, 20, 50, 56, 200 L in Pure-Pac™ 1

View returnable container options.

Safety Information

• Pictograms: GHS02,GHS07
• Signal Word: Danger
• Hazard Statements: H225 - H302 + H312 + H332 - H319
• Precautionary Statements: P210 - P280 - P301 + P312 - P303 + P361 + P353 - P304 + P340 + P312 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Eye Irrit. 2 - Flam. Liq. 2
• Storage Class Code: 3 - Flammable liquids
• WGK: WGK 2
• Flash Point(F): 35.6 °F - closed cup
• Flash Point(C): 2.0 °C - closed cup
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves