CN34892

Acetonitrile

Preparateur, ≥99.9% (GC), Customized plastic drum

• Synonym(s): ACN, Cyanomethane, Ethyl nitrile, Methyl cyanide
• Linear Formula: CH₃CN
• CAS Number: 75-05-8
• Molecular Weight: 41.05
• Beilstein/REAXYS Number: 741857
• EC Number: 200-835-2
• MDL number: MFCD00001878
• UNSPSC Code: 12191502
• PubChem Substance ID: 329798433

Properties

• vapor density: 1.41 (vs air)
• vapor pressure: 72.8 mmHg ( 20 °C)
• assay: ≥99.9% (GC)
• form: liquid
• autoignition temp.: 973 °F
• expl. lim.: 16 %
• impurities: ≤0.005% free acid (as CH₃COOH); ≤0.02% water (Karl Fischer); ≤1 mg/L non-volatile matter
• color: colorless
• transmittance: 200 nm, >50%; 220 nm, >90%
• refractive index: n20/D 1.344 (lit.)
• bp: 81-82 °C (lit.)
• mp: −45 °C (lit.)
• density: 0.786 g/mL at 25 °C (lit.)
• format: neat
• SMILES string: CC#N
• InChI: 1S/C2H3N/c1-2-3/h1H3
• InChI key: WEVYAHXRMPXWCK-UHFFFAOYSA-N

Description

General description

Acetonitrile (MeCN), an aliphatic nitrile, is a colorless liquid with a characteristic odor. MeCN has low viscosity, high elution strength and is highly miscible in water. It is widely used as a solvent and intermediate in organic syntheses and is transparent to UV-visible light, making it highly applicable in spectrophotometric and fluorimetric techniques. 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 solvent in the following processes:

• Organic synthesis
• Liquid-liquid extraction, solid-phase extraction or microextraction.
• Spectrophotometric and fluorimetric techniques.
• Electrolytes in lithium-ion batteries
• Determination of pKa values of organic superbases using the isodensity polarization continuum model (IPCM).

Safety Information

• pictograms: GHS02,GHS07
• signalword: Danger
• hcodes: H225,H302 + H312 + H332,H319
• pcodes: 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: 3 - Flammable liquids
• wgk_germany: WGK 2
• flash_point_f: 35.6 °F - closed cup
• flash_point_c: 2.0 °C - closed cup