34998

Acetonitrile

HPLC Plus, ≥99.9%

• 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: 329755104
• NACRES: NA.03

Properties

• grade: HPLC Plus
• Quality Level: 100
• vapor density: 1.41 (vs air)
• vapor pressure: 72.8 mmHg ( 20 °C)
• Assay: ≥99.9%
• form: liquid
• autoignition temp.: 973 °F
• expl. lim.: 16 %
• baseline drift measuring range: ≤12 mAU (210 nm)
• technique(s): HPLC: suitable; IR spectroscopy: suitable
• impurities: ≤0.0001% free alkali (as NH₃); ≤0.0002% non-volatile matter; ≤0.001% free acid (as CH₃COOH); ≤0.01% water (Karl Fischer); ≤0.5 ppb fluorescence (quinine) at 254 nm; ≤0.5 ppb fluorescence (quinine) at 365 nm
• halogenated residue: 10 ng/L (as heptachlor epoxide)
• 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.)
• HPLC-gradient: ≤0.2 mAU at 254 nm; ≤1 mAU at 210 nm
• λ: H₂O reference
• UV absorption: λ: 195 nm A_max: ≤0.10; λ: 200 nm A_max: ≤0.02; λ: 228 nm A_max: ≤0.005; λ: 235 nm A_max: ≤0.0044; λ: 250 nm A_max: ≤0.0044; λ: 400 nm A_max: ≤0.0044
• application(s): food and beverages
• format: neat
• SMILES string: CC#N
• InChI: 1S/C2H3N/c1-2-3/h1H3
• InChI key: WEVYAHXRMPXWCK-UHFFFAOYSA-N

Description

General description

Acetonitrile (MeCN) is widely employed as a solvent in various studies and has high dielectric constant (37.5). Various purification procedures to obtain different grades of acetonitrile for use in different studies (polarography, spectroscopy, etc.) have been reported by many researchers.

Application

Acetonitrile has been used to compose the gradient system for the HPLC detection of diphenylmethane diisocyanate, a polymeric degradation product.

New Quality UPLC Plus Acetonitrile is suitable for all applications including:
Mass spectrometry, HPLC, TLC, GPC, UV, IR, GC, Pesticide Residue Analysis, and RNA/DNA Synthesis and Purification.

Packaging

View returnable container options.

Preparation Note

Product filtered through a 0.2 μm filter

Other Notes

Pure-Pac^® II containers require the Micromatic MacroValve coupler for dispensing solvents, Z560723.

Important notice

• The article number 34998-4X2.5L will be discontinued. Please order the single bottle 34998-2.5L which is physically identical with the same exact specifications.
• The article number 34998-6X1L will be discontinued. Please order the single bottle 34998-1L which is physically identical with the same exact specifications.

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Legal Information

Pure-Pac is a registered trademark of Sigma-Aldrich Co. LLC

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